I have a boyfriend who I love very much, and I have NEVER cheated on him. But whenever I talk to *anyone* (male or female) I feel sexual tension with them...even if I'm not really attracted to them. The only jokes I ever laugh at are dirty jokes. I feel like I say inappropriate things to a lot of people, then I feel embarrassed. I don't enjoy watching any movies rated less than R. I find myself not paying attention at school because of my fantasies. I'm 17 but I've been this way as long as I can remember...is this normal teenage behavior??? Or am I over-sexual?