Originally Posted by goodhabits

One very basic solution to this which can work well in the long term is using 2 condoms. Heck, use 2 thick condoms, as long as it slightly de-sensitises you, but allows you to maintain an erection. The girl won't mind as it won't affect her pleasure at all, and is infact safer. Whats more is you'll last a lot longer.
After a few times like this, see how you go, when your ready, go down to one condom.
Just think of them like training wheels.
If this fails, have a wank an hour before you see her...