That's easy, dude. Don't let it bother you. If your cool and just laugh whenever you hear and tell what the real deal is, people will know she's nuts. Also, you could call her up and say you changed your mind. The possibilities of retribution are limitless at that point.

It's just that the wording of your comment seemed to imply that a rumor started by a girl was way more powerful than one started by a guy

Tell everyone "she does too."

Typical behaviour when rejected. Wouldn't worry too much about it. That's just one pissed off girl. She'll move on. Hopefully. :/

Why should OP feel obliged to give someone who he has no attraction to or interest in a chance? It's entirely his choice and he obviously didn't want to date her. Dating someone you don't want to just because you feel obliged to is just ******* stupid.

She sounds like a winner. Dodged a bullet there.

When in doubt....whip it out.

That was a dick move on her part. I know it sucks, but it will blow over. She may even realize how she has only screwed herself, in the end.

Some girls can be bitches

You should ask her if she has a brother who just graduated.