That ' s the thing . I would think LESS of him if he didn ' t prioritise his kids . But , in my opinion he ' s too friendly with her . She cheated on him , emptied their joint accounts and bailed on him . But then she calls him all the time he listens to her problems . His valid reasoning is that when she gets her shit together it ' ll be easier to get the kids back . My counter to that was he should only talk to her about that shit , and not her roommate problems etc . but here he is having thanksgiving with her . I don ' t want to be the cool girlfriend who gets taken for granted Edit about the seriousness of our relationship , recently he ' s told me he sees marriage in our future . But , I am very family oriented , and his sister just flat out rejected me .