LGBT: ok, so I really love her. and she says she loves me too. she promised not to, but hooked up with a girl?

a few days after professing her love to me. she said she didn't want this girl, cuz it wasn't me. I was pleased when she said this. we are far away and have liked each other a long time. well, now I feel like I wasn't worth waiting for, even though she tells me that I am... or did, all the time. We are BEST friends! She is in the middle of a drama with someone else right now so I don't think she realizes she hurt me. I don't want to ruin our friendship by being all jealous or add to her drama (somewhat resolved) but she lied to me and now we can never be together like she talked about. this other girl is obsessed with her and she thinks it's funny! And I'm in love with her. I don't know if her feelings for me have changed in the past days or not. I want to know if it's best to just move on or let her know she hurt me and see if we can salvage our relationship as far as love goes. thanks.