God I really need help

OK, so, I'm in love, for the first time ever. I swore I would never fall in love. But this is basically a horror story. I'm in love with the guy my friend dated for 7 months and had her first kiss with. This is also the guy that my Best Friend was in love with for 4 years, and she says she isn't anymore, but I know she's lying to me. He knows that I "thought I liked him". But he doesn't know the whole truth. I think about him constantly, every song, every picture, every word, just everything. And the best part of it is, I'm not even sure if we are friends anymore. Someone, PLEASE help me!