OK so I had a best friend who I would have done anything for, then she met this guy, he was really cool. He asked her out3 days after they met, which was kind of weird and she thought so too. So they started going out, in the mean time me and him started to like each other. He told me that he would rather be with me, and when they were done and had broken up, that he wanted to be with me. So they had been going out for like a week and a half. So me and him decided to go to the movies and no one would find out. So we went, and one of my friends came with us. We kissed, and that was that. So 2 days later the whole school knew, my friend had told what had happened. I got so much crap, I got harassed and was too afraid to show my face in school. Me and the guy still like each other, but my friend is starting to forgive me, and I don't know what to do :(

I don't know :(

I am very much confused by the context of your post, its very contradictive..
First you said you went to the cinema with him and no one would find out, but a friend went along with you. You 2 kissed and the whole school found out... mmmm I wonder how!
How is your best friend, is she still your best friend?

So what exactly is your question?