I have been curious about this for a while.

So you know how some guys love having their nipples played with and others don't, yeah? Well a former roommate of mine took a long time to cum. It's just how he was wired. He would fuck girls for over an hour without trying. It's actually hard for him to cum. On the other hand, I can cum pretty quick, if I want. And actually even if I don't want, it doesn't take long when I am really turned on, so to make sex last longer means basically edging -- stopping doing whatever I am doing when I feel close to the point of no return, waiting til that feeling subsides, then getting back into it. But I want to be able to fuck the guys who need lots of continuous fucking to cum. I want to be a better top for them.

My question is whether it's possible to develop the ability to fuck hard, continuously, for longer spans of time without getting to that point of no return, so there's no need to stop and wait. In other words, am I just wired to be a minute man and stop-and-start is the best I can do, or can I train to be a power top?