Hmmm, maybe try masturbating, then relaxing, then masturbating. I did that when I started ejaculating really fast and it helped so things down. The average penis size in America is 5.5 inches, a 19cm penis is 7.48 inches or about 7.5 inches, definitely rather large.

Cheers! MMAFighter, wow really? oh did not know that was huge!! oh thanks mate im sure the gf with love you know, so i guess by practising not to cum, mmm hopefully it works!!

hmm... I can last a LONG time, as long as she wants (my first time I lasted about 8 hrs. until my gf at the time got too tired, TALK ABOUT MAJOR BLUE BALLS) and I always thought that was because I do masturbate a lot. I used to make my sessions last only like 2 minutes, I thought maybe it had some sort of desensitizing effect on me and that's why I lasted so long. You probably could benefit from practicing self-control though, try to time a masturbation session, and force yourself to make it last 20 minutes, if you get close to early, just stop for a minute. You'll begin to get a feel of what controls your stimulation. Another thing, when you do have sex, try using a condom if you don't already; basically that can REALLY desensitize you and help you out in this case.