Sounds like it could be fun. Start by telling her that she has to handle anything that may come up Sounds like she already knows you get turned-on by her hair and she is wanting to tease you for this first time. I wouldn't worry about it and let things happen as they do. Enjoy yourself and, if you get an erection, don't be ashamed...come on here, would she get upset if you got a hard-on because she had big tits?

I think she is just jacking with you, and you are going to end up loosing a load or two...and gaining a lover at the same time.