If you're not happy with the arrangement now, then it's only going to get worse as time goes on. It will not get better.
If your boyfriend's dad is the one who's paying the rent (or most of the rent), then you can't just expect him to leave you guys alone. It's his house, too. Even if it's in your boyfriend's name. You can't just play House with your boyfriend and expect his dad to support the two of you but not be around all the time. If you want to live like an independent couple, then you need to support yourselves.
If you are unhappy living there, then you need to get out. Now. Like PPs said, find some girlfriends to move in with, or look for Roomates Wanted ads. Move back in with your own family for a while to save up money, if they would agree with that. But get out of this living arrangement as soon as you can, because Daddy isn't going anywhere.
but it seems his dad will still live here when bf and i are able to afford it, just because when i mention when his dad is moving bf get upset or angry
This part is a big problem. If you want a future with your boyfriend, then you need to lay your cards on the table NOW. Don't just pray that he'll change his mind as the years go by. If you tell him that you don't want to live with his father, but you move in with them anyway to save money, you're showing your boyfriend that you can just be walked all over. You're also showing him that you will gladly come in second to his father, and that's not what a partnership is about. Trust me. I've been in a similar situation (although we weren't the ones being supported, it was the other way around), and it's not fun. You will just get more resentful, frustrated and angry as time goes on.
You need to get out of this situation NOW ... whether that means moving out for a while until the two of you can afford to live alone, or breaking it off with him altogether if he refuses anything other than the three of you living together forever. But you need to do it sooner rather than later, because the more you put it off ("I'll just stay a while longer until we save up enough money" or "I'll stay until he changes his mind about his dad living with us", etc.), the longer you'll feel like you're stuck there.
Maybride2:
Re: Looks like we were right
Sara, Friend?
glove slap. I don't take crap.
I WISH they did, but it's not always the case. I'm making v. little as an Americorps now (and am risking my year of service by trying to work on my nights/weekends too) but my loan company REFUSES to negotiate a different repayment plan for my 3 private loans that have come due while I'm serving. They're private so they denied forbearance/deferment and I begged them (and every supervisor who would talk to me) to negotiate a different repayment plan, but they said they'd just go after my co-signer if I didn't make the payments. I was literally in tears this morning because I'm having a harder and harder time each month scraping enough together to make it and I tried calling again and they said they might negotiate something if I go into default, but otherwise I need to make the full payments (because if I don't pay in full the $$ will only go towards the fees and penalties they levy on me for not paying in full).