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The original was posted on /r/AmItheAsshole by /u/qwhful on 2023-09-04 13:55:17.


I (17F) recently found out that my dad (50M) had been hiding another family for years. My mom (50F) wanted me to forgive him, but I just couldn’t bring myself to do it. To make things even more complicated, my boyfriend is friends with the girl who might be my half-sister, which is how I discovered the truth.

So, here’s the deal. My family has already been a bit… problematic. I knew my dad was a cheater, i have a whole list of things hes done, but a few months ago when my boyfriend casually mentioned his friend, let’s call her Mack. He told me to add her on snapchat. I was confused and did. She told me I might be her half-sister. She even showed me her birth certificate.

I confronted my dad about it, and that’s when everything came crashing down. He admitted that he had been hiding another family for years and that Mack was his daughter from that relationship. I felt like my world was falling apart. My mom knew about this secret for years and had decided to keep it from me and my brother (20M).

The worst part is, this affair must’ve happened as my brother was about 2. Mack is only a few months older than me.

My mom wanted me to forgive my dad and try to accept this other family into our lives. She says that my dad made a mistake, and we should all move forward as a family. But I can’t shake the feeling of betrayal and hurt. I feel like my trust in my dad has been shattered, and I can’t just pretend like everything is okay.

So, AITA for ignoring my dad and not being able to forgive him?

I’m torn between my mom’s plea for forgiveness and my own feelings of anger and confusion. Is it wrong for me to want some distance from my dad while I process everything? I can’t help but feel like the bad guy in this situation, but I’m struggling to come to terms with the enormity of what my dad did. What should I do?

I’ve had to talk and pretend im fine since it all went down. When i did ignore him, i felt like i was judged for it.

I havent spoken to Mack much because i feel like i dont belong.