i suppose it all depends on the people invloved.like healer said, 15 minutes, is way too short for me. the longest we've ever gone is for about 2 hours and i was really sore after that.
usually i'm a quick cummer
so, i'll get mine out the way. i'll on average have about 3-4 orgasms and then i'll work on him.
we have to go slow in the begining, cos like he said, he's very sensitive in the first coupla minutes, but after that, he's like the energiser bunny..."never say die"
but, even after all my orgasms, i still find it enjoyable and dont feel sore all the time.
dont get me wrong, im not saying that we always have to have an orgasm, cos it's nice, once in a while to have the sex without the climax. it's alot of fun too