It is really unfortunate to have a rumor attached to yourself. Its not fun, and difficult at that age when you still attend school. Just wait it out and talk to your boyfriend and see what he says too. If you care about this boy it would be wise to listen to his feelings on the matter and try not to seem overly eager to become friends with this potential friend it may come across as you wanted more than friendship making him insecure. Good luck with the conversation little woman.