I don't know if this will work for you but it did for me, before having sex, spank the monkey about an hour before, or half hour, etc, (say you need to take a shower ;) works every time). your body is going to be satisfied and so when you get ready for your next go, it gets a lot easier. then your body starts getting used to the fact that it goes for a long time, and it just gets easier and easier!! another idea is to do something physically exerting before.. or make sex physically exerting, Whenever I had sex after running a mile or so it took forever!! good luck!