How would you feel it SO ex is still hanging out with his family?

She still tries to talk to him, and do all this stuff for him. My last relationship ended because I got cheated on in an exact way like this. The family talked to her more, and love her a lot more. All I ever do is try. Every time I’m there at his nanny’s her or his sister bring his ex up at some point. Idk it’s just aggravating? My family hates my ex for what he did. This girl was suppose to have abused him, and cheat on him with his best friend. how could his family like her after that? They were friends all together 6 years married and together for about 3 or 4. She’s literally obsessed. When we first got together all she did was non stop text him and call him. She’s always tried to start stuff since we have been together no matter what it is. We’ve been together 8 months now. Just curious on how everyone else would feel in the situation.

They have NO kids together either.