Are you willing to spend the next 50 years like this? If not why bother? Just pack.

Pack his stuff up. Look I understand how there are situations where he must put his daughter first. Your sister is getting married and you have flight reservations prepaid and non-refundable. His girl is in the hospital.

But EVERY TIME? Of course not. I.e. she spits in your food without consequences?

Now obviously I'm being extreme but for a reason. If he really means it when he says that you are totally powerless in the relationship and have to stand by while he supports his 20 something princess by buying cars and apartments then you really need to get out. I know she's 10 now but it'll get worse not better. Much worse. He's drawn the line, either cross it or toss him.

Move on woman - you're nothing to this guy. Rather move him on I meant.

if choosing to end ur relationship with your spouse vs. ur child (which i think is what's being asked for here?)How many BMs would't choose their children over their spouse? And yet this BF is getting a little chastised for not picking his wife over his child?!?! I have always made it clear to both my DH and my skids that relationships can end but their father will always be their father and if it ever came down to it they come first! I personally would seriously question the character of anyone that didn't put their kids first and definitely wouldn't try and date them. obviously this is not to say you should be a doormat or that your opinions don't matter, just don't give him the "its me or your child ultimatum" and expect to win.

(Before i get killed i realise there are EXTREME situations in which the bio parent would have to make the opposite decision)