I've had enough!!

My boyfriend is a fucking dick! I bend over backwards to do stuff to make him happy but nothing is good enough. We've been together a long time and have lived together for 6 years. He blows hot and cold all the time and doesn't appreciate a single fucking thing I do. I'm only here because I have nowhere else to live. I'm almost positive he cheated on me last weekend, let's just say I've found 'evidence' I noticed today he's been trying to cover it up so he doesn't know that I know. I've also noticed his changes towards me like i'l look at him quickly and he's throwing me these looks of disgust, then when he sees me looking he'll change his mood to look happier (so fucking fake) I'm not stupid I know when a relationship is dead and I don't even fucking care anymore. I'm due to come into some money so as soon as that clears I'm fucking gone!!