Ok, bare with me, you guys. There may be a lot of details here. Some may be useful and others may not be...decide for yourself. Ok, well, I'm 21 and I recently started to have sex (late bloomer...I know) and I've noticed that I'm having trouble maintaining an erection. And even when I get an erection, it seems like I'm not getting 100% hard (when I'm fully erect I'm about 8x5, but I never seem to get that hard when I'm with someone). For whatever reason, I've always had trouble staying hard, particularly when standing. And over the years of masturbating, I developed an odd kink or nuance in which I have a lot more success staying hard and ejaculating when I rub my nipples. But, this hasn't helped me much during sex. (Have I desensitized myself if I need to do this?...maybe I should save that for another thread...) Also, I find it easier to get an erection when I'm laying down or seated, but even then, I'm struggling to maintain it during sex, especially when I'm ready to put a condom on. I've only had a little bit of success in cowgirl and doggystyle, but like I said, despite being very turned on, I can't maintain an erection for very long. And to make things even crazier, I found out something even more alarming. To make a long story short, my older brother, our best friend, and I ended up meeting 3 girls at a bar and we ended up back at their place. I ended up in bed with one of these girls two nights in a row and I experienced trouble getting hard on both nights. On the first night, I was luckily able to get by because she really responded well to oral. But, on the next night, I could sense her frustration and she gave me the "I'm tired..." line when I went limp after about 5 minutes of doggy. I kissed her goodbye and walked out...defeated :frown1: Strangely enough, on the way home, I found out my brother, who was in the act with my chick's roommate, couldn't maintain an erection either. Apparently, he has the same problem as me! So, my question is...what should WE do? Should I stop masturbating all together? At age 21 and 25, I'm guessing this isn't normal. Is it? My brother did a little research and he suggested that we should try a supplement called L-Arginine. Supposedly, it helps with ED and blood circulation to the penis. Has anyone found that this works? And if so, how much should I take? I took 3 400mg pills today (1.2g total), but I saw that WebMD recommended that I should take 5g a day and a lower dosage may not have any effect. I'm also doing kegel exercises as much as I can throughout the day. Will any of this help? I need answers Sorry for the lengthy synopsis, but I would love any advice. THANKS!