What Should i do?

i dont know what to do. i was going out with this guy and we broke up. and we have been really good friends since, we still have feelings for each other but he now has a new gf. he still comes to my house sometimes and something always ends up happening between us. its like he wants both of us. and i tell him that he has to pick one of us and he picks her. but then he will come to my house again and something else will happen. but then again he picks her. i dont understand. and alot he keeps hurting me and i should let my feelings for him go i jus cant and i hate it? i dont know what i should do??

He's male, he's using you, either stop him or get over it.

Thanks!! your advice is great thankyou!!
=) xx