Maybe I'm just old and jaded, but I wouldn't do anything drastic until I got some expert answers on a few things. I know everyone here means well and some have already cautioned you, but make sure that you can get your name off the lease or you can be held liable for the rent to the extent that you can be taken to court. I don't care how nice your landlord is, when it comes to the rent cheque he may prove to be just another businessman even if he's always been a friendly one and he'll want his money. If your bf and his friend hardly work - you can be sure they aren't going to be paying the rent.
Without the people that replied on this thread and Nikki (trixie23) helping me through this... I would never have had enough courage to go through with this. Noone made me do anything, they just encouraged and supported me through my hard times. I really appreciate it!