I need people's opinion on what I should do. I'm really messed up. (sorry it's long)?

I'm fourteen and LOVE my bestfriend and i would die for her easily, i went out with a girl cal corinne and i liked her alot but never as much as my bestfriend, anyway one day my bestfriend (whom of which was the first person i came out to and was also really accepting but said she was straight so she'd never like me) said that she hooked up with a girl i got SO jealous and cried a bit infront of her but stopped myself now im just friends with her and corrine, i really want to be with my bestfriend but i just have to learn to accept she's not into me and corrine iv kinda given up, why be with someone you dont completley love right? i think you should forget them both and stay friends and find someone else you really really love, sorry this isn't much of an answer just wanted to let you know your not alone at all :(