Im 18 and me and my last girlfriend did it all the time and i never had a problem! i would go for a good 5 to 6 minutes! But with this girlfriend i stick it in and it feels so good and i cum in like 1 minute! what does this mean? is there anything i can do to go longer? the only time i went longer than a minute and a half with her was when i was a little drunk and i went for about 45 minutes straight!
Read what I wrote in Help! Same goes for you- what you can do at 18 is different than what you can do as you get older. Might as well start getting used to it and learn to get better at foreplay - AND do kegels exercises.