Go slow at first, this will help you last a bit longer, because the heat and motion that builds up with going fast will make you go earlier than you want. A trick that I use to last longer is to think about other things while having sex. For instance, if you think you are going to go earlier than you want then stop thinking about the moment and think about sports, work, videogames or what you have to do the next day. If you feel yourself getting soft again, then focus back on her and the moment. This seems to let me go as long as I want and your woman will think your a sex god because you can give her multiple orgasms everytime you have sex.