Is it worth it anymore...? ---need major help?

Yeah, the full story so its been about 12.5 months now, ever since july shes began to like other guys. it crushed me but i let her do it. Now school started, im not allowed to do acting cause of her, its too "gay" same with swimming.Now i sit home alone every day, friendless, i wanted to make friends but she claims its noone different, but i thought i could still meet people i didnt know. i recently gave both of those things up it crushed me again, and all of a sudden she cant sit with me at lunch anymore, cause i talked to her friend who she "hates" but they hangout like everyday. Now she wants to dump me cause it made me upset. She hasnt even kissed or hugged me in overe 5 months i dont get it, i gave up all that stuff oh i also gave up some friends and i dont wanna sound selfish but i feel like i should be getting something out of this.. i wouldnt mind her not sitting with me at lunch but shes not in any of my cles and im apparently too annoying to hangout with her? i dont get it! she can hug other guys so much but not me and she just insults me all the time, even on our 1 year anniversary! i almost cried the next period! and almost every night. i love her so much but idk what to do. She just cursed me out for no reason as well. My life really sucks right now, pleaseeeeee help!!!!!?????? I feel like i lost in a win, win situation.. thanks for reading that if anyone did.