is it love?

i've been going out with my boyfriend for almost a year now. About a month and a half into the relationship he told me that he loved me and that night i had went home, thought about if i really loved him, and then told him that i loved him the next day. I really do love him and continue to tell him that. about 4 or 5 months ago he told me that he had made a mistake when he told me that he loved me and that he had done some thinking and he really didn't. he said that we were both too young (we're both 15)and that we didn't know what love was. I totally don't agree with that and this TOTALLY crushed me. he assured me that he didn't like me any less than he always has but that wasn't much comfort because i had believed for months that his feelings were stronger than that. He used to always write me these really gushy love letters about how much he loved me and he's never loved anyone else or felt that way about anyone else before and all of a sudden all of those love letters meant nothing. In time, the shock wore off and I got used to the fact that he didn't "love" me and only "liked me a lot." However I still really wish that he would love me. it's really hard sometimes knowing that the feelings aren't mutual and also that i was lead to believe that he loved me and all of a sudden, one day all of that was gone when it was never there in the first place. one day about two months ago he told me that he thought that he was really starting to fall in love with me, for real this time. he said that he realized that when we were alone the day before and he had been looking deeply into my eyes. i was kinda hesitant about believing that because of what had happened in the past and i think i was right to do so because after he said that nothing came of it and he acted as if nothing had ever happened and he had never said anything. then about a month ago we were just hanging out after school where we always do