My Sister Planned a Lie Detector Contest for My Fiancé and Me at My Wedding—the Wedding Was Canceled After Taking It

I always thought my wedding day would be unforgettable for all the right reasons. Instead, it became unforgettable for a reason I could never have imagined. It all began when my sister brought a lie detector test to the wedding.

I’m Harlene, a 28-year-old teacher, and until recently, I thought I had the perfect life. My fiancé, Mark, and I had been together for five wonderful years, planning a future filled with love and laughter. That future vanished the moment my sister, Melissa, turned my wedding into a nightmare.

Let me explain.

A woman standing outdoors | Source: Midjourney

A woman standing outdoors | Source: Midjourney

Mark and I met through a mutual friend five years ago, and from the moment we connected, it felt like we’d known each other forever.

He was very kind and sensitive to everyone’s feelings around him. What I loved the most about him was how he respected everyone equally and never shied away from helping others.

It didn’t take time before we became inseparable. We’d spend weekends exploring new restaurants, binge-watching sitcoms, and dreaming about the future.

“Har,” he’d say with a teasing grin, “if you weren’t such a good cook, I’d probably starve to death.”

A man standing in his house | Source: Midjourney

A man standing in his house | Source: Midjourney

“Good thing I love feeding you,” I’d reply, laughing as he polished off yet another plate of lasagna.

Mark worked as a software developer, a job that sometimes kept him at his desk late into the night. I never minded, though. I understood his dedication and appreciated the effort he put into his career.

As for me, I was living my dream as a teacher. My students were my little rays of sunshine, and I loved every chaotic, beautiful moment of my job.

Children in a classroom | Source: Pexels

Children in a classroom | Source: Pexels

When we decided to get married, we both agreed that our wedding should be a celebration of love and fun. We wanted everyone to feel as happy as we did.

“Let’s make it the kind of wedding people will talk about for years,” Mark said one evening as we brainstormed ideas.

“Definitely,” I replied. “How about games? Fun ones that get everyone involved?”

“Perfect,” he said, his eyes lighting up. “We can have trivia or charades or something. Maybe even a karaoke battle.”

A man talking to a woman | Source: Midjourney

A man talking to a woman | Source: Midjourney

We even looped in my sister, Melissa, for some ideas. At the time, she didn’t seem particularly interested.

“I don’t know,” she said with a shrug. “You guys are the creative ones. Just tell me what to do, and I’ll help.”

With Melissa’s lackluster input, Mark and I continued planning the wedding of our dreams. Every detail mattered to us, from the playlist to the seating chart.

Mark was attentive to everything, from how the napkins matched the centerpieces to ensuring that the cake was perfect.

A wedding planner | Source: Pexels

A wedding planner | Source: Pexels

“This is going to be the best day of our lives,” I told him as we finalized the guest list.

“It will,” he said, squeezing my hand. “I can’t wait to see you walk down the aisle.”

And I believed him. I believed in us. We were the perfect team, and nothing could go wrong.

Little did I know, the wedding we so lovingly planned would turn into a moment I’d wish I could forget.

An upset woman | Source: Pexels

An upset woman | Source: Pexels

The day of the wedding had finally arrived, and I was filled with excitement.

As I stood in front of the mirror, I couldn’t stop smiling. This was it. This was the day I’d dreamed of for so long.

When I walked into the venue, the energy was electric. Everyone seemed to be having a wonderful time, laughing, chatting, and soaking in the atmosphere we’d worked so hard to create.

Mark greeted me at the entrance with a kiss on the cheek.

A woman smiling on her big day | Source: Midjourney

A woman smiling on her big day | Source: Midjourney

“You look stunning, Har,” he said, his voice full of admiration.

“And you look dashing yourself,” I replied with a grin, taking in his crisp suit and the way his eyes sparkled.

Everything felt magical until Melissa grabbed the microphone.

“Alright, everyone!” she called out, her voice cutting through the chatter. “I have a little surprise for the happy couple! I’ve been planning this for weeks, and I promise it’s going to be so much fun!”

I looked at her with wide eyes. I hadn’t heard anything about a surprise game.

A woman at her sister's wedding | Source: Midjourney

A woman at her sister’s wedding | Source: Midjourney

“Melissa, what’s this about?” I asked, walking over to her.

“You’ll see!” she said with a mischievous grin. She waved to a man in the corner, who wheeled in a small machine with wires and sensors.

“What on earth is that?” I asked, my curiosity piqued.

“It’s a lie detector!” Melissa exclaimed, beaming. “I saw this online and thought it would be a hilarious wedding game. You and Mark will answer a few fun questions while hooked up to it. Trust me, everyone’s going to love it.”

A woman talking to her sister | Source: Midjourney

A woman talking to her sister | Source: Midjourney

I glanced at Mark, who gave me a skeptical look but shrugged.

“Why not?” he said. “Let’s give them a show.”

“That’s the spirit!” Melissa exclaimed, clapping her hands. “Come on, let’s get started.”

The technician hooked us up to the machine, and Melissa began with lighthearted questions.

“Mark,” she said with a smirk, “have you ever eaten the last slice of pizza and blamed it on Harlene?”

He laughed. “Yes,” he admitted, to a chorus of laughter from the guests.

A man on his big day | Source: Midjourney

A man on his big day | Source: Midjourney

Next, it was my turn.

“Harlene,” Melissa asked, “have you ever secretly binge-watched a show without Mark?”

“Guilty as charged,” I said, grinning as the detector beeped to confirm I was telling the truth.

The questions continued, each one sillier than the last. Guests took turns coming up with their own, like, “Have you ever lied about liking your partner’s cooking?” or “Did you ever have a crush on a celebrity while dating each other?”

The air was filled with laughter, and I thought this might actually be one of the most memorable moments of the day.

A woman looking straight ahead, smiling | Source: Midjourney

A woman looking straight ahead, smiling | Source: Midjourney

Then Uncle Sam stood up. His usually jovial face was deadly serious as he walked toward the mic.

“Now it’s my turn,” he said, his voice low and deliberate. “Mark, did you ever cheat on my niece?”

Wait, what? I thought. Where did that come from?

I stared at him in silence, while the murmurs filled the air.

Mark chuckled nervously, looking around at the stunned faces.

“That’s a ridiculous question, Uncle Sam. I don’t think I need to dignify it with an answer,” he said, trying to wave it off.

A groom talking to a man | Source: Midjourney

A groom talking to a man | Source: Midjourney

But Uncle Sam wasn’t smiling.

“I think you should, Mark,” he said firmly. “If you’ve got nothing to hide, what’s the harm in answering?”

I felt my heart pounding in my chest.

“Mark,” I said, trying to diffuse the tension, “it’s just a game. Let’s not ruin the mood, okay?”

Mark turned to me, his jaw tight. “Exactly. It’s just a game, and this question is out of line.”

But the look in his eyes gave me pause. There was no humor there, no easy confidence. He looked… defensive.

A groom at his wedding | Source: Midjourney

A groom at his wedding | Source: Midjourney

I tried to reassure myself. This was Mark, my Mark. The man I’d trusted and loved for five years. There was no way he’d cheated on me. Right?

But Uncle Sam wasn’t backing down. “Why not answer, then? If it’s absurd, prove it.”

Mark clenched his fists, his face hardening. “Because it’s insulting, that’s why. I don’t owe anyone an answer to something so ridiculous.”

I glanced around the room, noticing the growing unease among the guests. The whispers, the exchanged glances. My pulse quickened. Why was Mark reacting this way?

A woman at her wedding | Source: Midjourney

A woman at her wedding | Source: Midjourney

“Mark,” I said softly, reaching for his hand. “Answer it so we can move on.”

But he shook his head. “No, Harlene. I won’t dignify this with a response.”

His response told me something wasn’t right.

“Mark,” I said, my voice trembling, “if you don’t answer, I’m not sure I can go through with this wedding. I need to know there’s nothing to hide.”

He looked around and then sighed.

“Fine,” he said, glaring at Uncle Sam. “No, I have not cheated on Harlene.”

A man talking to an older man | Source: Midjourney

A man talking to an older man | Source: Midjourney

Uncle Sam looked at the technician. “He’s lying, isn’t it?”

The technician quickly analyzed the results and nodded. “It looks like a lie.”

The gasp from the crowd was deafening.

“What?” I whispered. How is this possible?”

Uncle Sam smiled.

“Is there anyone in this room with whom you cheated?” he asked.

Mark looked like he’d been cornered. “No,” he said flatly.

“Another lie,” the technician said promptly.

I couldn’t believe it.

“Who, Mark?” I asked. “Who did you cheat on me with?”

A bride talking to the groom | Source: Midjourney

A bride talking to the groom | Source: Midjourney

He didn’t answer.

That’s when I noticed Melissa, my sister, shifting uncomfortably. A horrible thought crept into my mind.

“Was it her?” I asked, pointing at Melissa. “Did you cheat on me with my sister?”

Mark froze. He looked at Melissa before his gaze locked with mine.

“Tell me Mark!” I insisted. “Was it her? Melissa?”

Mark looked at the ground and said what I didn’t want to hear.

“Yes,” he said.

The machine didn’t need to confirm it, but it did. Truth.

A man standing outdoors | Source: Midjourney

A man standing outdoors | Source: Midjourney

The silence in the room was deafening, broken only by my shaky breath. My mind raced as I stared at Mark, then at Melissa, who looked like she wanted to disappear into the floor.

Before I could even form a question, Uncle Sam cleared his throat.

“I wasn’t going to say anything today,” he began, his gaze fixed on Mark. “But I saw you two together a few weeks ago. I was at the mall, grabbing lunch, when I spotted you, Mark, holding Melissa’s hand. I thought maybe I was imagining it until I saw the way you leaned into her. The way you touched her cheek.”

A man and a woman standing in a mall | Source: Midjourney

A man and a woman standing in a mall | Source: Midjourney

He paused, shaking his head in disgust. “It wasn’t how a future brother-in-law behaves with his fiancée’s sister. I hoped I was wrong, but something told me I wasn’t. So, when Melissa showed up today acting nervous and twitchy, I decided it was time to find out the truth.”

His words were like knives, cutting through whatever illusion I’d been clinging to. I looked at Melissa, whose face was streaked with tears. “Why?” I whispered, barely able to speak. “You’re my sister. How could you?”

“Harlene, I…” she started, but her voice cracked, and she couldn’t finish.

A woman talking to her sister | Source: Midjourney

A woman talking to her sister | Source: Midjourney

Then, I turned to Mark. “You didn’t just betray me. You betrayed everything we built together. How could you do this? Why?”

Mark looked away, unable to meet my eyes. “I made a mistake,” he muttered, as if that was supposed to erase the pain he’d caused.

My chest tightened, and my vision blurred with tears. I couldn’t forgive Mark. I knew cheating wasn’t just a mistake. It was a choice, and one I could never accept.

Without another word, I ripped off the wires from the lie detector and walked out, leaving behind the man I thought I knew, the sister I thought I could trust, and the wedding that would never be.

Some betrayals leave scars too deep to heal, and this was one I couldn’t ignore.

A bride running away | Source: Freepik

A bride running away | Source: Freepik

I Chose Not to Include My Daughter-in-Law on a Family Vacation, and I Believe My Decision Was Justified

But every trip was a reminder of how connected we were and how much we valued this time together. It was a break from our everyday lives, a chance to let loose and just be, at least for some time.

“Mom, do you remember that time at the beach house when Kayla fell off the dock?” Evelyn would laugh, nudging her sister.

“Don’t remind me!” Kayla groaned, but she couldn’t help smiling. “I still can’t believe you all left me in the water like that.”

“We didn’t leave you, sweetheart. We were laughing too hard to pull you out,” I would tease, shaking my head.

These moments were precious, and I held onto them fiercely. But things started to change when Liam, my only son, got married to Beth.

Beth was sweet when they first met. Quiet, reserved, but kind-hearted. I was genuinely happy for them, and when they got married, I welcomed her into our family with open arms. Naturally, I invited her to join us on our girls’ trips. I wanted her to feel included, to be a part of our little tradition. It felt right at the time.

At first, Beth fit in well enough. She was always polite, maybe a little shy, but I thought she’d warm up eventually. She wasn’t as chatty as my girls, but she seemed to enjoy the trips. We all tried to make her feel comfortable.

“So, Beth,” Kayla asked one afternoon as we sat in a café on one of our trips. “What was it like growing up in Maine? I’ve always wanted to visit.”

Beth smiled softly, twirling the straw in her iced coffee. “It was nice. Quiet. Not much to do in my town, but the summers were beautiful.”

The conversation felt a bit forced, but we all chalked it up to Beth needing time to adjust. She’d become part of our family, and I wanted her to feel like she belonged.

But after Beth gave birth to her son, Lucas, things changed. She gained a lot of weight during pregnancy, which isn’t unusual. However, eight years later, she still hadn’t lost the baby weight.

I noticed how much it was affecting her, not just physically but in the way she moved and interacted with us. It was becoming harder to include her in our trips.

One day, we were out shopping. It was supposed to be a fun, lighthearted afternoon, just like old times. We’d hit the mall, grabbed lunch, and made our way through the stores, chatting and laughing. But Beth kept falling behind.

I glanced back and saw her sitting on a bench near the entrance of a department store. She looked exhausted, wiping the sweat from her brow. “You guys go ahead,” she said, breathing heavily. “I’ll catch up.”

Evelyn raised an eyebrow at me, trying to hide her frustration. “Mom, do we need to wait again?”

I sighed. “Let’s just give her a few minutes.”

But those few minutes turned into long stretches of waiting. We’d walk ahead, browse through the racks, and eventually circle back to find Beth still sitting there. It was becoming a pattern — and not just on that day. Every trip we went on, we had to slow down, stop more often, and accommodate her.

By the time we left the mall that day, the mood had shifted. What was supposed to be a carefree afternoon felt strained, and my girls were clearly frustrated.

“Mom, I hate to say it, but these trips aren’t the same anymore,” Kayla said as we loaded the shopping bags into the car.

“I know,” I replied, running a hand through my hair. “I just… I don’t want to leave her out.”

Evelyn nodded, her face softening. “We get it. But we can’t keep doing this. It’s not fair to us either.”

I couldn’t argue with that. I knew they were right. The truth was, Beth’s presence had begun to change the dynamic of our trips, and not for the better.

We were holding back, compromising our enjoyment to accommodate her. And it wasn’t just about walking slower or sitting more. It felt like the whole energy of our outings was different.

The tipping point came when we started planning our annual trip to the pumpkin patch and apple orchard. It’s a tradition we’ve had for years — my favorite time of the year.

The fall colors, the smell of apples in the air, the laughter as we wandered through the orchard picking fruit. It was something we all looked forward to.

As we sat around the kitchen table, Evelyn looked up from her phone. “So, are we inviting Beth this year?”

I hesitated. We all knew what that would mean. Long breaks, slow walks, and probably missing out on some of the things we enjoyed most about the trip.

“I don’t think it’s a good idea,” I finally said, my voice low. “It’s a lot of walking, and… well, you know.”

Kayla sighed with relief. “I’m glad you said it, Mom. It’s been hard with her.”

“We haven’t had a proper girls’ day in so long,” Lauren added, looking at her sisters. “I miss the way things used to be.”

The truth was staring me in the face, and there was no avoiding it.
That’s when I made the decision not to invite Beth. It wasn’t easy, but I told myself it was for the best. My daughters deserved a day to relax and enjoy themselves without constantly having to adjust to Beth’s limitations.

The day of the trip came, and it was perfect. The weather was crisp, the leaves were golden and red, and we spent the entire day walking through the orchard, picking apples, and laughing.

We didn’t have to stop or slow down. It was like the old days, just me and my girls. I even posted a few pictures on Facebook, not thinking much of it.

But later that night, my phone rang. It was Beth.

I took a deep breath before answering. “Hi, Beth.”

“Lilian, I saw the pictures on Facebook,” she said, her voice tense. “Why wasn’t I invited?”

I felt my stomach drop. I knew this conversation was coming, but I wasn’t prepared. “Oh, it was just a small trip,” I stammered. “Nothing big.”

“But I’m family,” Beth said, her voice rising. “Why didn’t you invite me?”

There it was. The question I had been dreading. I could’ve lied, made up some excuse, but what would be the point? The truth was staring me in the face, and there was no avoiding it.

“Beth,” I said softly, trying to choose my words carefully. “It’s not that we don’t want you there. It’s just… well, the walking. You’ve needed a lot of breaks, and it’s made it hard for us to enjoy the trips the way we used to.”

Silence hung in the air for what felt like an eternity.

“So, you didn’t invite me because of my weight?” she asked, her voice barely above a whisper.

I swallowed hard. “Yes,” I admitted, guilt washing over me. “It’s been difficult. We’ve had to change the way we do things, and… I didn’t want to say anything, but it’s affected our trips.”

Beth was quiet for a moment, and I could feel the hurt radiating through the phone. “I thought I was part of this family,” she finally said, her voice trembling. “I thought you cared about me.”

“I do care about you, Beth—”

“No, you don’t,” she interrupted. “If you did, you wouldn’t have excluded me like this. You wouldn’t make me feel like an outsider.”

And with that, she hung up. I sat there, staring at the phone, my heart heavy with regret.

Later that night, Liam texted me. “Mom, Beth’s really hurt. You need to apologize.”

I read the text over and over, feeling torn. Should I apologize? Was I wrong to protect this time with my daughters? I wasn’t sure anymore.

The next morning, I talked to the girls. “Do you think I was too harsh?” I asked as we sat around the kitchen table.

“No, Mom,” Evelyn said, shaking her head. “We love Beth, but it’s not fair to us either. Our trips haven’t been the same.”

Kayla nodded. “We just want to enjoy ourselves like we used to. You did the right thing.”

Their reassurance helped, but I couldn’t shake the guilt. I didn’t want to hurt Beth, but I couldn’t ignore the strain her presence had put on our trips.

I’d reached my limit. Maybe I could’ve handled it better, maybe I should’ve been kinder, but the truth was out now.

I still don’t know if I made the right decision. All I wanted was to protect the bond I had with my daughters. But now I wonder if that decision has cost me something far greater.

Do you think I handled it correctly? What would you have done in my place?

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