Re: How long should I last?
Well, you should strive to learn to control yourself so you can last how ever long is necessary to give her what she expects. As was said, it is difficult for most men to thrust continually and last longer than a few minutes, at best. Most men need to slow down, stop and/or withdraw for a bit (in the guize of changing positions) or think of physics equations or something to last longer. Note that some women, especially those who can't orgasm vaginally, may not want you to last long. They would want you to take your time going down on them or engaged in foreplay, but they won't mind if intercourse only takes just a few minutes. Other women who can reach orgasm vaginally might need 10 to 20 minutes of hard thrusting to get there, and that can be challenge for many men. But, if you are with a woman who needs or expects it, it is something to works towards. Some men will have a quickie and then they will go a second round where they will be able to go for the long haul. But, the main thing to consider is what SHE wants, and many women simply don't want intercourse to be a marathon. So, ask her.