A woman confided in her sister about a past relationship with her fiancé, Christopher, revealing that they had previously been involved before the engagement. The revelation led to an initial breakup, but the sister eventually reconciled with Christopher, accepting his assurances that the affair was a regrettable mistake.
Now, the woman faces isolation from her family, accused of interfering with the relationship out of jealousy. As tensions rise, she finds herself questioning whether speaking up was the right choice or if it only fueled unnecessary drama. Read the full story below…

‘ AITAH for Telling My Sister I Hooked Up with Her Fiancé and Ruining Her Engagement, Even Though She Took Him Back?’
I (19F) come from a deeply religious family where arranged marriages through matchmakers are the norm. In contrast, I’ve distanced myself from those traditions, choosing to date casually—making me the family’s black sheep. My sister, Marie (25F), is the golden child—beautiful, intelligent, and charismatic—but she’s struggled to find a husband despite her many attempts.
After a string of failed matches, she finally got engaged last month to Christopher (30M). The whole family breathed a sigh of relief, thrilled that she had finally found someone. I wanted to be happy for her—but then I met her fiancé. And that’s when everything changed.
Christopher and I had a history. A year ago, we hooked up. For clarity, the age gap between us isn’t an issue, so please don’t focus on that.
We met at a party, and despite his religious background, his divorce made it clear that he wasn’t overly concerned with “staying pure.” Over the course of our time together, we hooked up five times. He was my first everything—kiss, hookup, all of it. After the fifth time, he confessed that he was falling for me, but I wasn’t looking for a serious relationship. I cut things off before it got messy—especially since I knew he was ultimately seeking marriage, and I wasn’t the right person for that.
We hadn’t crossed paths again—until Marie introduced him as her fiancé. The moment our eyes met, the tension was undeniable. We were both thinking the same thing: Oh, st. That night, Christopher pulled me aside, begging me not to say anything.
He insisted it was meaningless, buried in the past, and that revealing it would only ruin Marie’s happiness. His messages and calls continued for a week, pleading with me to stay silent—reminding me of everything Marie had endured and warning that I’d be the one to destroy her life if I told the truth.
At first, I stayed quiet. I didn’t want to hurt her. But the guilt was suffocating me—watching her step into a situation she had no idea about felt like letting her walk into disaster. She deserved to know the truth. So, I told her.
Marie refused to believe me at first. She accused me of trying to sabotage her happiness out of jealousy over being single. It wasn’t until I showed her our text exchanges and photos that reality hit her. She lost it.
She confronted Christopher, who denied everything—until the proof was right in his face. That was the breaking point. Marie called off the engagement. But that wasn’t the end—it was only the beginning.
My parents and other relatives turned on me, saying I should have kept quiet. They claimed I had ruined Marie’s one chance at happiness and called me s**fish for interfering. I wasn’t even invited to the wedding. Yes—Marie and Christopher got back together. But there’s more.
While they were dating, Christopher reached out to me unexpectedly, saying he wanted to “reconnect.” His words were vague, but the intention was clear—it was a booty call. I had no idea he was involved with Marie at the time, let alone engaged to her.
When I revealed our past, I also told her about that call—thinking she deserved the full picture. That backfired spectacularly.
Marie accused me of fabricating lies to sabotage their relationship. Christopher denied everything, flipping the narrative to paint me as obsessed with him. Marie believed him, calling me a “desperate home-wrecking whore.” Since I had deleted my call history, I had no proof. It became a “he said, she said” situation, and Marie chose his side.
Now, they’re officially back together and planning their wedding. Marie showed up at my apartment weeks after our fallout, crying. Christopher had convinced her that what happened between us was just a “meaningless mistake” that ultimately made him realize how much he wanted to be with her.
I tried to explain that he had told me he was falling for me—not to imply that he still had feelings, but to show her that he was lying about what our past actually was. She only grew angrier, hurling accusations before storming out.
Since then, I’ve been completely cut off from family events. My parents say I’ve caused enough damage. Extended relatives openly call me slurs, both behind my back and to my face. Every attempt I’ve made to explain myself has been shut down.
So, they’re getting married. And I’m left wondering—did I just ruin my relationship with my family for nothing? Should I have stayed silent? Did I do the right thing, or did I throw everything away without reason?