So there is this not and we like each other and we always tell each other we love each other. But yesterday I hung out with him and his best friend. So then I kissed the guy I like. After he left, I kissed his best friend. As soon as I kissed him I started to like him. So now I like his best friend and his best friend likes me. What do I tell the guy I did like? Please help.

Explain that you really care for him but you think things would work better if you were just friends. He probably won't talk to u for a while but eventually he will come around. But make sure things are going to work out with you and the best friend before dumping your boy friend. Once the damage is done you might end up without both of them. So be care full and good luck:p

How old are you because this sounds like just another 90210 espiode.

You have to chose and your behavior isn't good. Hopefully they don't let you come between their friendship.