I'm having terrible girl troubles, please take the time to read this?

So heres where the story starts. I'm in high school. At the beginning of this year i was sorta friends with this girl in my spanish cl, then i started liking her and haning out with her and her friends, and then i told her i liked her and we went out for a week till i broke up because she didnt seem to really like me and she treated me poorly, but i managed to maintain a good friendship with her that is still going. One of her bestfriends is kate. one of kates bestfriends is aasha. I met aasha at a football game the day after i broke up with the other girl, and i almost immediately liked her, but we didnt go out for a while. so aasha and i would hang out and we knew we liked eachother but aasha didnt want a boyfriend because she has devotion issues. so i spent about two months getting crushed over and over by aasha, her acting like she really liked me and making out with me etc then saying that she needed space and also saying she didnt want a boyfriend. so i just about gave up and then out of no where she decides she wants to go out. so we went out for three weeks until she dumped me because she once again did not want a boyfriend. so i just kind of put up with it and mostly kept my mood up. well remember kate? the girl who is friends with the first girl that i went out with and aasha? well then i started liking her because she was always there for me and helping keep me up when aasha was puting me down. so to be honest i told aasha that i liked kate, kate being her best friend, she bitched me out but a couple days later we were all dandy good friends again, but aasha made kate promise she wouldnt do anything with me. Then, this week, only two weeks after aasha dumped me, she has already moved onto another guy, who she really likes and may end up going out with, after dumping me because she doesnt want a boyfriend. whats worse is i still have really strong feelings for her, and her, being jealous that i like her bestfriend, is making sure that i find out everything she is doing with other guys, which is basically sending me straight into depression. kate likes me, and i like her, but we cant do anything because kate will lose two bestfriends. the first girlfriend, kates friend, likes me. i still have strong feelings for aasha, and im hearing every vivid detail of everything shes doing with this guy, and its not g rated either. ive stopped talking and being social, i mostly just sit silently throughout the day, i have no energy, i have no hope, i dont eat often, and im constantly on the edge of a mental breakdown. help me. advice would help...