How do you break up with someone you live with?

My boyfriend has been trying to cheat on me, now I have the problem of breaking up with him. Telling him is the easy part, but my name is on the apartment contract and all the bills, and i simply cannot pay them off without him. Do i wait and suffer through until they're all paid off or just break it off and hope for my family to help pay?How do you break up with someone you live with?
1st : you need to confirm through your own eyes and ears that he is really cheating on you. make sure he's not aware that you saw him. don't make any move yet. 2nd : find somebody whom you can trust to share the rent with. make sure this person is responsible to do his/her part as your roommate. 3rd : DUMP HIM with no further elaborations. you need to be firm with your decisions because you're better off without your loser bf. 4th : start a good relationship with your roommate as a friend/business partner. be open with adjustments, esp. if it will benefit you both. 5th : MOVE ON. work hard - save for future needs - stay gorgeous - enjoy being single. be SMART - to outsmart a foolish heart =)