How can I get over him? How can I ever..

I used to love LOVE this guy so so so much.. he meant everythin to me. I could do anything for him, but I was too shy to admit, I couldnt even stand it when he looks into my eyes and say hi.. in those situations I just walked away. He probably thinks I’m v shy and never socialize.. ok to the story. I liked him for a couple of months.. I nearly believe he liked me back too.. then, on valentines day last year, he asked a hot girl out not to mention how heartbroken I was.. kk, this girl might noticed I like this guy.. so she started to talk to me about how close they were, how was their first date like.. all the single shit I never wanna hear eventually they fell in love, and is now together.

Somehow that girl became one of my friends and we are pretty close to each other.. at first I get to her just becos I thought if I became her friend , that guy might noticed me.. no, never. They love each other too much, I have no one to speak to. its been a year now.. I still love him so so so much.. I couldnt imagine life without him but I couldnt afford to spoil their relationship this girl is a friend of mine too.. what shall I do? what could I do? I feel like dying.. T.T