I read that most of men didn't last more than 5 minutes, so your partner might not be as bad as you think...

for my case, though, I "suffer" from delayed ejaculation; because of lack of sensitivity, I can last easily 1 hour before cumming; it's not about control, it's about a medical condition, but my partner seems to enjoy. It's not that I'm thin, though, I'm 6'' of girth.