It's funny. When I was 15 and 16 I would have done anything to have had an older guy (still a hottie..not a grandpa) to suck off. I used to stare at my neighbor who was in his 30's and just wish that he would come over and flop it out. Of course, in retrospect, he would have been a perv child molester to have done that to me...at least I could have made the first overture. Anyway, now I'm 45, still handsome and would love a 18+ plus guy to suck off regularly. There should never be guilt to consensual sex ever. If you both get what you want then what's the big deal?