Family Drama

Sooo me and my boyfriend been together for 2 years and with those years we had a lot of drama. Ok so the root of his problem is his sister even before I met her she had a problem with me then I moved from where I was to be with my boyfriend (he moved to finish school) so boom I told him I want to spend time with him because either we were both working or he was over at her house watching her kids(she has a husband tho). So skip a few months my boyfriend is in basic and I’m trying to be friendly with her cuz I wanted him to come home to a peaceful environment. But after a while I couldn’t keep kissing her ass so snapped and told her I can’t keep doing this. So fast forward me and my boyfriend broke up and got back together but his family cut him off because we got back together. They keep saying that I want him to take care of me and the thing is he never did I’m always the one to pick him up or take care of him. Or they’re saying imma get pregnant and that’s my way out cuz he’s in the military. Is that fair???