I Was Stupid To Fall In Love

4 years ago i met this boy who i thought was lovely, but i wasn't looking for love, he kind of sneaked up on me. At first i only saw him as a friend but as time passed, stupid as i was i fell for him. We were best friends and we spent everyday together, i told him things i have never told anyone and i could be myself around him. I introduced him to one of my other boy mates and they got on really well, they started leaving me out and we all started to argue all the time, which was always my fault according to them. I started resenting my other mate, which made things worse, and eventually they stopped asking me out altogther. I tried my hardest to get on with my life but ever so often they would turn up at my door. i started a friends with benefits situation with the boy i loved because i thought he would eventually feel the same. I mean i didn't get why he didn't love me back, i did everything for him, lent him money, picked him up, dropped him home, we spent hours talking, watching movies, going out and yet he still didn't want me. In January we had a massive arguement and we stopped talking for about 6 weeks, he then came knocking on my door one day and said he missed me. The following day we met up and he told me he had a girlfriend. He had told me he didn't want a girlfriend, so i was shocked at this, but he said it wouldn't change anything between us, and at first it didn't. We still went cinema and i still stayed round his house, and when my mum and dad went away, he stayed for the whole two weeks, we were still sleeping together and it felt like we were a proper couple. He told me his girlfriend was boring and it seemed like we were finally in a good place. Then the night before my parents got home, we had another arguement and he told me i was a **** friend. He came back around to collect his stuff and i ain't spoke to him since. I just don't get how i can't mean nothing to him, and if i don't mean nothing to him why does he always come back. I know he doesn't love me, but i just don't get why, he told me he has feelings for me but he don't know what they are. He always confuses me and now i'm stuck waiting for him to come knocking again, it has been 2 weeks now and i'm going crazy, how can someone be sooo mean to someone who was ment to be their best friend and cares so much about them!