Why do I feel like crying?

Well I had like this boy since were in yr8 and were know in yr9 and since that we got very close ( lets give him a name bob ) and he used to flirt with me and I loved him so much! But he dint wna go out with me… And then after new years, we came back to school and he was all over my bestfriend ( lets give her a name mia ) who had like him through years but not as much as I did as she liked other people but anyway back after new years he was all over her center of attention rather then me &+ we had a week off with valentime day on it and I had been chatting to another boy ( lets give a name carl ) who makes me laugh so much! And I started to like him And we go together then couple days he dumped me.. Back at school bob was all over mia still and I hate bob and I like carl who I had just been out with and I still do! &+ know mia and the bob go out… With part of my help aswell , but im feeling jelous slighty I waited 2 years full love and got none in return im gutterd and feel lonley and I think im falling for bob again when he shouts for me rnd my window, and I still love carl but I wont ever go back to falling deepley in love with bob he had hurt me loads of times in the past, but bob the one I loved most and I feel like crying but why ? I dont get it

I starting to think I dont like any boys in confuessed? Why do I feel like crying :(