well, considering you are underage, and he's an adult, you shouldn't be having sex anyway... he's now classed as a paedophile...
sounds like you just need a friend with benefits, when you want sex... a booty call only...
1) you should firstly stop your friend putting up photos...
2) delete the question...
3) delete the photos from photobucket... cos some people use the links to download the photos...
it is too young if you are immature about it...
you are 15, enjoy your childhood... worry about sex and the implications of it when you are mature enough to be aware of all the consequences... :D