Hi I'm a fairly healthy 19 year old guy, and I have an amazing girlfriend. We've been together almost a year, and I we couldn't be happier with eachother. Personality wise, we're a perfect match for eachother. I think she is GEORGEOUS, too. I don't like skinny girls really, and my girlfriend has the EXACT body type I had always DREAMED of being with. I am VERY much attracted to her. Anyway, she is the only girl I've ever had sex with, and at first, it was great! She absoloutly LOVED it, as did I, and it was kinda hard even for me to last more than 10 minutes or so. Anyway, the last few times we've been having sex, it starts out GREAT, and i mean GREATTTT. We try different positions all the time, but both agree that doggy style or missionary work the best for both of us. On with the problem though. After getting to the point where it feels like I'm about to come, I tell her (she likes me to tell her), and then it seems like the feeling goes away, and I start to get soft. After that, I can go on for 10-15-20 minutes with a semi-hard penis, and i dont feel any close to coming. Its frustrating, for both of us. The only things that have really changed since we both had GREAT sex would maybe be the condoms we use (She's going on the pill in a few weeks hopefully), though when we first tried them (durex ones, forget what they're called, they're ribbed and studded and stuff) we had no problems. The only other thing I can think of really would be that its been hotter than hell lately, so it gets REALLY sweaty, and I do most of the work. Other things that I've though of that MIGHT have something to do with this is that (again, this is the only girl I've been with all the way) she doesnt feel particularly TIGHT usually, but it was never a problem before really. She is a year younger than myself and, well, she hasn't had THAT much more experience than myself. Also, sometimes she likes to tease me. She'll ask "umm... do you want to do it now?" or she'll play with me or take my hand and put it "down there" or whatever, and then be like "I think I want to take a nap...", and she'll lay down and just talk about something else for 5 or 10 minutes, then do it again, before we actually do anything. Could this have something to do with it also? What about when we're going at it and I'm getting close, and she'll be feeling "Too good" or whatever and like move her legs around so I cant keep going for a few seconds? would this screw me up THAT much? :ugh Any suggestions on what to do to try and fix this situation? I'm 19 for crying out loud, I shouldn't have this problem!