I feel really bad bc me and the brother have children together and it ended badly. Now three years later I'm with his sister and he is finally getting his act together. We take the kids to see him and I try to not do anything to provoke my girlfriend that I want him in any kind of way. And bwfore anyone tries to say "ew that's disgusting" well y'all dont say a damn thing to a girl who has been with two brothers now have you? It's the same thing just opposite sex. Anyways, we have been arguing here lately since we have been doing the kids see him thing. Her response to the argument is mainly bc she thinks that I'm going to leave her for him. I have never been unfaithful to her , ever. Even when she has hurt me in the past. My question is {I guess to the people who are open minded and not as judgmental} what do you think I should do? I no longer want a relationship with my ex, as I know we are toxic together. I just want his wellbeing to be okay and him to help support the kids and be in their lives. As for my girlfriend we've lived together for two years now and I'm just baffled at her thinking I'd ever do such a thing to her 😓😩🌈