Who buys and cooks the food? decides on meals? washes dishes, clothes, housework etc? Often despite the most enormous love and best intentions amongst families, it's the little everyday things that build up tension and resentment. Families are different, and your boyfriend is now living with a family who have different values,routines etc (even if similar) and your Dad is living with your boyfriends family values, routines etc (even if similar) neither obviously feels comfortable enough (which seems normal) to challenge this openly, so passive aggression and whinging starts. Neither wants to bring issues to you as they don't want you upset, it might be the smallest thing that's causing this, but everyone's being too polite for their own good. Or that's what tends to happen, an open, honest word with both, with the promise from you that you will listen and not judge, will give you a handle on what the problem is, and whether it's workable in that house, which financially seems the best bet to me. Very Good luck