Alright, i know most people are against hanging out with guys with girlfriends, but..?

basically i've already let him see me 3 times, i didnt kiss him, and the last time i did kiss him was about a year ago (he's only had a gf 2 months) but i decided i am going to win him over, because he knows he's in love with me, and i know he wants to be with me. i know what you're thinking "if he wants to be with you than he would be", but thats not true, he doesnt want to break this girls heart, and shes home and im away at school, and i do that wishy washy ****, and im so indecisive. he wanted to be with me and when he asked me if we'd ever be together i said "i dont know what to tell you". How should i win him over? I go back to college sunday, and he wants to see me tomorrow.