Dead dad twin brother sleeping with his mistress

I really need to get this off my chest before I crash out 🥴

My dad committed suicide almost 11 years ago. Shot himself in the head in front of my mom. His last words were “do you want to play Russian roulette”. Pretty fucked.

The last year or two before his death were really hard. I was 13 when he passed and my sibling was 11. He was a serial cheater, before birth and after having us. Mom stayed because she loved him, then because we were young. He ended up meeting someone almost a year before his death, and ended up impregnating her. I have a sister out there.

His relationship with this woman had a significant impact on my childhood. My dad became an alcoholic, and when he was drunk he was abusive. Mom and dad always fought so he drank a lot which lead to a lot of fights, I often ended up in the middle. He would get drunk and leave to go to her home. He attempted suicide and failed on 4 or 5 occasions I can remember while I was there before he was successful. I was the one who caught him cheating.

Anyways there’s a whole bunch of other trauma but it all gets brought back up now, 11 years later, because my dead dad’s identical twin brother is having an affair with my dead dad’s mistress.

It’s like triggering me in a way that brings me back to the childhood version of myself I feel like I’m having g Déjà vu or something. And everything he’s doing is exactly identical to my dad’s relationship with this woman, despite my dad and his brother living in separate states and not speaking to each other for years. My uncle didn’t even know this woman, she reached out to him for the first time a month ago and now he’s head over heels this shit is crazy cause he can’t get over his brother’s death and is somehow using that to justify his affair