help!!!

Ok so I screwed it up with my guy "friend" and he and I decided that we are going to be friends since his work schedule is starting to get too hectic. I believe it's my fault because in the beg. when he wanted me, I didnt want him. Now that I want him, he doesnt want me and I feel bad, hurt and wish i could be with him. I have been told by my friends that the best thing to do is to just be his FRIEND and hope for the best in the future. Sometimes its hard to be his "friend" and wish to not contact him or see him again. (sigh) I miss him so much but i have read hope in ex's getting back together. how can i go about? ....or is it too late???

PS I forgot to mention that I met him through my friends so i basically see him or atleast here is name all the time from my friend. I dont want to tell her to stop talking to him because of our misbehalf AND i work with him but it hurts to know that i can not be with him. i truly want to know how i can i get him back if there's any hope..