AITAH for Don’t want My mom marry the guy she cheated on my dad with and forcing me to move to different country

So this is gonna be long but I really need advice because I feel like my whole life is falling apart and nobody’s listening to me.

I’m 15M and my life is completely falling apart right now. I need advice because I feel stuck between my parents and I don’t know what to do My parents divorced 3 years ago because my mom (44F) cheated on my dad (44M) with one of her clients a really wealthy guy. It destroyed our family. My mom fought hard in the divorce and got primary custody of me and my sister (17F). My dad got visitation rights but we only see him every other weekend and some holidays.

I was so angry at my mom when it all happened. I couldn’t believe she did that to my dad. But at the same time, she’s always been a good mom to me kind, caring, always there when I need her. My sister doesn’t even care about the cheating. She’s just like “they’re adults, it’s their business” and moved on. I wish I could be that chill but I can’t.

My mom’s been dating this guy (the one she cheated with) for these past 3 years. A few months ago she finally introduced us to him properly. Honestly he seems nice. He’s polite, tries to connect with me, treats us well. But I hate him. Every time I look at him I think about how he destroyed my family.

Now here’s where everything gets worse. They just announced they’re getting MARRIED this summer. I honestly didn’t think it would actually happen I thought maybe they’d just keep dating or eventually break up. But no, it’s real.

AND they’re making us move to another country where HE lives. Just like that. My whole life here my friends, my school, everything gone.

I told my mom I’m not okay with this. I can’t live under the same roof as the man who destroyed my parents’s marriage. I don’t want to leave my life here. But she keeps saying I’ll have a “better life” there, go to private school, have more opportunities because he has money. She says I “need to be okay with this” like I don’t have a choice.

Here’s the thing though – my dad found out about the move and he’s PISSED. He told me he doesn’t want me to go. He said if I want to stay here with him, he’ll fight for custody. He says he can’t stand the thought of me living across the world with “that man” and that I belong here with him.

Part of me really wants to stay with my dad. I love him and I know this is killing him. He’s already lost so much because of what mom did

My mom would be heartbroken and furious if I chose dad

My sister is fine with moving and thinks I’m being dramatic

My mom says she has legal custody and I’m going whether I like it or not. That if dad tries to fight it, it’ll just make everything messy and hurt everyone. She keeps trying to convince me that this move is good for me.

I feel so torn. I don’t want to abandon my dad but I also don’t want to destroy my relationship with my mom. I can’t imagine living with my mom and her new husband in some foreign country, but I also don’t know if living with my dad full time would actually work out

My sister thinks I should just go with mom and “stop being difficult.” She says dad will be fine and I’m making this harder than it needs to be.

I feel it’s unfair to me okay with her new marriage and stay in same with a man who destroyed my parents marriage and i don’t want her to marry him! also she has my whole custody, she don’t want to give it up!

i don’t know what to choose

Edit – Omg i found out it’s illegal for my mom to move while holding my custody, and on the other hand she is never going to give up my custody, So i think she can’t move!

I don’t think they are either going to marry, hopefully everything will be same