I recently just tried to sleep with my girlfriend of about 2 months.. I havnt been getting a lot of sleep recently and when we were on the bedroom I had an erection and then there was a distraction and when I got back I couldn't get my erection back. What could of caused this?
Simple. You lost focus and then when you went back to the bedroom you focused on your penis in an incorrect manner. Switching your focus at the wrong time, or being distracted during sex can make you either lose your erection or lose control.