Should I do it 4 good?

Ok,so I have this guy-friend.He's like the sweetest guy friend I ever have,and I think I like him...again,bcuz' I used to like him last year.Ok,so the other day,he told me he don't like me back,and I was all like,".....and who said that I like u?".But before that day,my BFF told me that he told her that he really likes me.So back to the "I don't like u back," part.OK,so I called my BFF and told her about it,and she was all like,"Maybe,he's just sayin that so u won't think that he likes u back." I don't know if I was supposed to agree with her.So the next day,he was tryin' to get my attention and kept on talking to me,but I decided to ignore him 4 good,and besides it's useless that u like someone but they don't like u back.But now I feel sorry for him and I also feel guilty,for what I'm doin'.I can't stop thinkin' about him,and I can't stop the feelings that I feel about him.so what should I do?!Do I continue ignoring him or what?!MAJOR HLP HERE!!!!Pls Help Me!!!!!!