You see, when I'm with my girlfriend, I have a little trouble keeping it hard during sex. Now I'm a completely healthy 18 yr old guy, and it kind of bothers me. I mean, I'm a pretty decent size (see pics in Pictures Of Men), and I get plenty hard enough to satisfy, but it seems like once any attention is taken from my cock, I start to lose the erection. Like, when I go down on her, it makes me hard. And when she goes down on me, it naturally gets very hard, but we usually did that before intercourse so I could put a condom on, and because it's foreplay. Well, it seems like as soon as she stops for me to put on a condom, my erection starts to fail. When I get inside of her, I do alright, but sometimes it just softens and we have to stop. It's really frustrating so I'm asking if any of you know of any ways for me to keep myself harder during sex. Any help would be greatly appreciated. Thank you. --DJ