Just give it time.
Now I can control when I want to come.
The trick is to pull back from the initial orgasm.
Once you do this you can fuck as long as you want and as long as your lady has the energy to do.
Thats the enjoyable part of the engagement.
Just remember you have to keep up the momentum at the later stages, otherwise your desensitised cock will go to sleep.
We don't want that now - do we?