It certainly concerns me.
This kid is known to us though, and he is a good kid, we have known him all his life. As it happens, she will also be his first girlfriend. I've already warned them both that if he touches her, he will be reported and jailed. They can be best friends for a couple years first, thats certainly what she wants, and I believe he will respect that. Its still scary.
I dont condone it, but parenting is a balancing act. You have to have a certain amount of trust in your kids, or you lose them. Once you lose them, you cant protect them anymore. All we can do is watch carefully and protect her as much as we can without alienating her.
I'm just glad she is a very intelligent, well balanced kid, who can and does make mature decisions. Peer pressure can be a powerful thing though, I think I am going to be spending far too much time watching her....