The longest I've ever lasted was 45 minutes. Don't ask me to this day how I did it.
Average 7 to 10 minutes with my dick in a chick and the sex is great. Why does it only last that long. Because I know she's really into it and the more she's really into it the more that turns me on.
Lastly on this point. Chicks don't stay wet for a fucking hour! Let alone 2.
