You may want to re-evaluate what the term "best friend" means.

If she believes that you would do that, she isn't your best friend.

don't think op's guilty, just pointing out that 'haven't seen him in 6 months' doesn't mean didn't sleep with him 6 months ago ;)

But... did you sleep with him?

You have nothing to lose by sleeping with him now. Have fun!

She needs to Do what you did to that Asian guy to her friend.

She needs to check herself.

Before she wrecks herself

You must be the kind of person that needs to go on Jerry Springer to settle this.

I'm going through something similar with a friend right now... Sometimes I wonder what gets into people's heads that makes them so insecure that they start accusing people of crimes they couldn't possibly have committed.