Give my x a chance or move on?

he left me 6 months ago. and i gave him my heart and soul. i was truly in love with him. words cannot describe the devastation and heartbreak he caused me. and to this day i still love him as much as the day he left. the pain has never gotten better. but since he dumped me he never really left. he got a new girlfriend a week after we broke up. which just added to the horrible pain he already caused. but every few weeks he gets a hold of me and somehow convinces me to see him. i love him but there is a lot of anger towards him. but when he sees me he fills my head with hope and makes me feel like i matter. then for some reason he disappears for a few weeks then does it all over again. he just recently emailed me 2 days ago saying hes sorry and he really does miss me and he never deserved me and asked me to forgive me and wants to try to work things out. the catch is he has nowhere to live except in the house his girlfriend owns so he cannot leave her until he can afford to move out. i know it stupid to even talk to him but i really do love this man with all my heart and he wants me to wait for him and to work things out and put up with the horrible situation until he can move out. i already waited for him for 6 months. and who knows how long he could b stuck living with her. i just dont know though how to say no to this man. i cant think straight. i think with my heart and not my head. i honestly cant help it. i know i deserve someone who can be there for me and not have me wait while after they see me they go back to their girlfriend but i feel like i lost my best friend and my love and feeling he gives me are over whelming and take over. i dont know what to do anymore. i want to move on and be happy again. i wish i could be with him. but he is stuck with her and the thought of him sleeping next to her every night hurts to much to handle. im so confused and lost.