>>81551077 (OP)After fucking my girlfriend, I need about an hour before I really feel the desire again, but depending on what she does I can get a boner 5-10 minutes after cumming. The second round always lasts longer than the first round and I can really rail her so it's quite fun. After cumming inside her I tend to be more horny than normal for the next few days, and that's how I can maintain a streak where I fuck her at least every other day, ad infinitum. It's like a positive feedback loop. What puts the brakes on is jacking off, because it takes about 3 days to recover from that for me. Even if I fuck my gf and then cum on her face, if I have to finish myself off by hand then it takes the multiple days of recovery time. There's a qualitative difference between cumming from sex and cumming from masturbation. I have a fleshlight, and my refractory period is much shorter if I put it under my mattress and fuck it compared to when I use it to jerk myself off. I have done no research on this, but I assume that there is some kind of limiter in the brain to stop yourself jerking off all day getting nothing done.