AITAH for not telling my sister her boyfriend was my ex?

AITAH for not telling my sister her boyfriend was my ex?

When I came home for a college break I never expected to be thrown into such an awkward situation. My younger sister (20F) introduced me to her new boyfriend and to my surprise it was someone from my past.

AITAH for not telling my sister her boyfriend was my ex?
Source: Reddit

He wasn’t just any guy but an ex-boyfriend of mine from a few years back. He’s 24 now and when we dated it ended badly. He had cheated on me and I later found out he had several girlfriends at the same time. He was constantly asking for money and drinking heavily a walking red flag.

AITAH for not telling my sister her boyfriend was my ex?
Source: Reddit

When I saw him with my sister he acted like we’d never met and I decided to stay quiet unsure of what to do. I didn’t want to make things awkward or ruin her happiness. A day later he came to my house when my sister wasn’t around. He admitted he remembered me and asked me to keep our history a secret. He claimed he was a changed man and didn’t want to upset my sister who he said was very sensitive. He promised he wasn’t cheating on her and asked me to give him a chance. Against my better judgment I agreed to let it go and let the past stay in the past.

AITAH for not telling my sister her boyfriend was my ex?
Source: Reddit

About a week later everything unraveled. My sister stormed into my room furious and told me she had discovered her boyfriend was cheating on her. I felt so ashamed that I immediately confessed the truth. I told her I had recognized him when I first met him and explained that he had been my ex. I also told her about his plea for me to keep quiet. She was livid. She yelled at me and said I should have warned her the moment I saw him. She felt betrayed and disgusted calling him a red flag and even referring to him as my “leftovers.”

AITAH for not telling my sister her boyfriend was my ex?
Source: Reddit

She hasn’t spoken to me since not even when I returned to college. I understand her anger but I honestly thought I was doing the right thing by giving him the benefit of the doubt. Now I can’t help but wonder if I made the wrong choice.

People who heard my story didn’t hold back.

One person said “I agree with your sister. You should have told her right away. He was clearly an untrustworthy person and it was your responsibility to warn her. YTA.”

AITAH for not telling my sister her boyfriend was my ex?
Source: Reddit

Another commented “YTA. Sisters before misters. People like him don’t actually change overnight. You should have prioritized your sister’s well-being over keeping his secret.”

AITAH for not telling my sister her boyfriend was my ex?
Source: Reddit

Hearing this has made me reflect on my choices. Maybe staying quiet wasn’t about keeping the peace but avoiding confrontation. Looking back I can see how I could have handled it differently.

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