It depends when the last time I had sex was, sexual tensions and such, but on a good day, when we make love, not just fuck, so its slow and sensual, I can last up to 40 minutes or so (I think, memory isnt too good on that, may have been a break or something in the middle) and since I'm not in too good shape stamina wise, I find it a little difficult to get an erection after my first round, but my way around this is going down on my gf. Shes the first girl that I'v gone down on more than once, because I love doing it to her and, well, I love being down there on her, and its become an obsession of mine, so I find that going down on her not only makes her happy but it gets me ready for a second, third, fourth round