Well you have absolutely nothing wrong with your penis. Just becuase you are more sensitive to a moist, tight, warm area doesn't mean you have a problem. Sure you might think premature ejaculation is a problem but it really isn't. Most men don't have the labido that they desire. Don't watch as much porn...It makes you self concious about yourself...Well I mean, watch lesbian porn...Porn stars are not average men...They have incredibly large packages..And can blow loads that most men only dream of....
I also have a problem with cumming too quickly when I have sex with my girlfriend...We've had sex at least a hundred times and to no avail, I still ejaculate incredibly fast. It flatters her to be able to make me cum a few minutes after having sex. So it keeps her happy (makes her feel like I still desire her). I have a little problem with it, but I make sure that I thoroughly satisfy my girlfriend before engaging in sex....Meaning eating her out, giving her nice massages with oils...And getting her in the mood...So both of us are satisfied...My ultimate goal is to have a passionate night where we both climax at the same time...But it most likely will not happen for a while.....
Bro, dont worry about it you're fine!! Don't psyche yourself out about it...Only makes matters worse...Be comfortable....Just remember "attitude is everything"...Even in bed