My Girlfriend is a Lesbian?

Last year I had an amazing relationship that I'll never be able to forget. And though it only lasted for a year I can safely say I don't believe any human being feels the way I do about her. I've said before that she's the only reason I'm alive. She IS me. My family moved and I hate it here because I've been taken away from the only person I've ever loved or who's ever loved me. She's the only thing I can ever think about. ever. It's the only goal or purpose in my life. Because she's just such an amazing person. I've never felt this love from anyone. My friend text me at midnight yesterday, to tell me she has a girlfriend. Upon more texting today she says she does exclusively like girls. I'm pro every kind of gay right but I need her, so much. It's not an uncomfort picturing her with girls, but anybody. I don't want her to be of any preference but to love me, and I know she does. always. somewhere. I just can't watch the love of my life slip away like this. I don't want her to be unhappy but I want to be the only person that can love her for the rest of my life. because I know I can. I'm here for advice but I'm unable to live without her, and a person better suited for me doesn't exist. If you're gonna give advice please make it be about how to rectify my situation. Because that love was no accident and in the future it will be constant I'm sure of it. Thank you to anyone who does. I hope you have a similar experience.