When my girlfriend gives me head or a hand job, it seems to take a lot longer for me to cum than when i am having sex. It's not that she is bad at giving head or rubbing the ol' cock, it's pleasurable and i enjoy it. But i was wondering why i cum so fast when im fucking her. If i have sex with her more do you think i will get accustomed to it, and hence take longer to ejaculate? We just started having sex and it takes about 3 or 4 minutes for me to cum. Please help!!