I think it is a good thing that your dd has friends that are boys. I think healthy relationships can really develop out of friendship and shared interests!
My dd has expressed an interest in boys, but says she doesn't know how to be friends with them, and they make her nervous. She wonders why the other girls seem to know how to "talk to boys" but she doesn't. She is also very prudish, which I am OK with at this point! Like your girl, she isn't "crushing" on any movie stars or singers...no posters of teen idols in the bedroom yet!
I'm sure the day will come when our dd's are interested in boys and then we will enter a whole new phase of parenting!! !