Ok I'm 17 and the other day I was having sex in an out doory kind of not so private area... and we were doing are thing I was hard but then as we go along it seemed like I was harder at times then others... then as we were going it just went dead for no reason... this has never happened to me before... but I've never finished during sex... I go a really long time... I sometimes get random hard on's also when I think about sexual activitys... I masterbait quite abit to pornografy or even just thoughts in my head just takes longer... the only way a girl has ever gotten me off was with a hand job... I also take phills at times... but the ones that are perscribed to me are anti-depressants... so if any of you guys have any ideas I would apreasate it