Does he like me? and what should i do?

well, me and him are close friends, we see eachother every other day, he knows i used to like him. we fell out for a while then we became friends again, when we became friends again he was single, when were together now, we flirt alot, we feed eachother, and share drinks and food, we nearly kissed last week and we hold hands all the time and hug every two seconds we talk to each other every day and every night, but 2 weeks ago he got a girlfriend again, and then all of this stuff started to happen, we have layed next to each other in bed, in silence just looking at eachother smiling, we snuggle when watch tv, and on him msn name i have a :D instead of a :) like everyone else, we were on about his brother, his brothes goes out with someone 2 years younger than him, and i am 2 years younger than my friend, and i went ohh, it wud be like going out with someone in my year and he went or youu? and then later on i said, god, we are soo close sometimes people wud think we are brother and sister and he went or going out? he says im pretty and have loverly eyes, but 2 weeks ago he got a gf, and in the 2 weeks they have been going out all this has happened, his gf says that he sometimes randomly brings me up in a conversation, and all of my friends say he obviously likes me and i admit to having some feeling for him aswell. but i dont want to upset his gf as she has had people cheating on her in the past, i have no idea what to do. please help on what i shud do, does he like me? and what should i say to him or do to make things abit easier? i still want to be friends with him. please help xxx