I loved him so much....I miss him every day?

He was my only love...lasted for 2 years in a relationship....we were very young I was 13 and he was fifteen....we got back together when I got 17....then broke up again because we live in different countries.....I loved him more than he did I guess...he ended up hurting me more than once.....as for now....I came to a conclusion that I don't love him anymore....I love the old him when he was 15....I am 19 now and I miss him every day....Sometimes I cry like he's dead and I feel really depressed I stop talking I just listen to music and stare at the wall remembering our the good memories then remembering how he hurt me....I can't move on....My life is busy it's just that I need his love back....I miss that strong feeling all the time....I don't know what to do ? can you suggest me a book ? maybe I should take therapy ?