I suspect this was a result of one or more of the following;
>Wearing a condom hence reduced sensation
>Wasn't overly attracted to the girl I was with
>Slightly drunk

It's still ridiculous though. The closest I got was during doggy (for some reason I really struggle with missionary) but I eventually went limp. Later on she jerked me off until I finally came.

What the fuck is wrong with me? On the plus side, she got to enjoy herself, and I guess not busting at all is better than busting too soon.