My bestfriend really left me?

This seems like a super big deal now. but don't be fooled and don't do anything you will regret. Wait until your emotions have died down a bit and you are completely level minded. Then talk to your 'best friend' about it. and no. do not break up with your boyfriend. if you think he is not in love with you, then talk to him about that. but again, wait until your emotions are level and you are not so upset and hurt. when you are upset and hurt, you tend to do and say things that you normally wouldn't. good luck. I'm so sorry this is happening to you.