All I can say is I've had the thoughts....everytime my neighbors bring their 14 year old jailbait sisters over. Part of me wants to rationalize it, by saying "well when I was 15, all the girls my age were dating 20 year olds, so thus I'm getting what's due". But usually I try to put that out my head, or just remove myself from the situation. Then I remind myself my baby sister is those girls age, and I would immediately kick the guy's ass if he were my age trying to hit on her. Believe me, you do not want to get in a situation where her family is after you. Because when they find out...and they will....they're coming for your ass. (this isn't from experience, just happened to someone I knew). Just be very careful....and clear.