Boyfriends parents kicked him out now he's buying a house?

Hs feeling alot of pressure. He is 23 i'm 21 and he's making $240,000 a year so he can afford a mortgage and this is actually a blessing in disguise. The one thing is his dad just kicked him out because he has been sleeping over at my house alot and not coming home very often. OK so we concluded his dad doesn't want him to move out he is just trying to manipulate him and get some power by saying that, but my boyfriend is going to call his bluff and move out (but because he wanted to soon anyways). Anyways now his mom apparently went to his brother crying sobbing tears about him moving out but we both figure this is a manipulative tactic. Keep in mind his father and mother were NOT supportive parents if you know what I mean. Anyways do you think hes doing the right thing? How can I support him? What do you think his parents will do once he moves out? Also he doesnt want me to move in till were married but also my family is really annoying so im going to stay at his house on weekends and etc...is this a good idea? He said its ok