Stuck & Confused. What should I Do?

Or heres the thing. I met this guy whose 22 (im 21 btw) and hes a really nice guy. We talk all the time, everyday. We went out to the movies, a group of 7, so it wasnt really a solo date. But as time goes on we really start to like eachother. So recently I asked him how come hes not in a relationship and he told me he was but they are goin through some real rough times. I could have gotten mad but we are just friends and nothin more..and i took it upon 2 ume he was single..but anyways..I didnt stop the friendship over that, actually we've gotten even closer..I did tell him i liked him and he admitted he liked me 2 but also said but i guess that doesnt really mean n e thing now..but i told him i appreciate him tellin me how he felt..So i know he likes me but im also not a home wrecker, and i dont wanna step on dis grls toes even though i think i already have..We stay up on the phone all night, literally, talkin on the phone for hrs, 5hrs once about different things. Im not always the one callin, actually he usually calls n texts me. We even made plans 2 go out again. He told me that him and his grl arent really on good terms right now but he doesnt wanna throw in the towel just yet. He also told me hes tired of always jumpin the gun (which is understandable cuz i am 2) so he jus wanna let things happen. But its not like i can ruin something thats already ruined. We're just friends but im startin 2 catch feelins and i can tell he is 2 by his body language and how he acts. high school, and college psychology cl comes in handy lol...I guess my question is do I continue to stick around, cuz we are good friends?? Do I drop the whole relationship idea and move on 2 the next or wat? UGH!! its frustratin..help me plz..(and i dont wanna hear the whole "if hes willin 2 leave her for u den he'll do u the same" statement cuz this i already know but if ur relationship is already screwed & ur not even tryin den u basically opened the doors to let another woman step in so save that 1 plz.)