I apologize coz I guess its hard to say "not to think about it" coz when it happens, you just do. Perhaps having a beer or two might make you a bit long lasting. Imagine if you are like a porn stud and can last more than an hour, the girl might already be sore here and there. As what other bro mentioned, sometimes its not about cumming too fast, foreplay is most important which a lot of people tend to overlook. Cunningilus, fingering, etc., if you search the threads deeper, I recall there's one that taught people how to finger the girl to make them have multiple orgasms, yes orgasms that makes the girl squirt or squealing with spasms...hehe. I do a lot of foreplay and my girl (yes she's a fast cummer and also multiple cummer too!) would twirl around and begging for penetration, it wouldnt take long to get her another G shock once the penis pumping, and I believe at this stage no woman would laugh at you even if you come in 5 mins coz they'll be totally sextisfied, but might be begging for few more round...
Try different techniques everytime and play around so it wont be stereotype or boring for her and yourself, I think having fun is more important.
Cut down on fatty food or oily stuffs, try more veggie or fruits, take egg whites and avoid yolks. A link for you to consider and ponder on.
http://www.quickandsimple.com/diet-w...elly-fat-foods
U might not want to try commercial sex, but if the needs arises and IF u really have the urge to do it with a woman, it is still safer with brothels because the girls have to go for medical checkups periodically, and you should use condoms to prevent getting any unwanted bugs.