Okay, so here's my deal. I would post this on some sort of medical forum, but I'd rather get the opinions of normal, hippie-folk. Ever since I began seeing this girl (and consequently having sex with her) I've had trouble maintaining an erection during actual intercourse. I get hard when we start fooling around, but after I'm in her for a bit I begin to lose my erection. This has been happening almost every time with this girl since I met her in the fall. While I've been seeing this chick, I've had sex with my ex no problem, and am pretty sure I was able to perform with another girl, though I remember little. The girl thinks it's because she doesnt turn me on, which is completely wrong. I smoke weed pretty regularly, so I thought that might be the cause, but since I get hard during foreplay and remained hard with other girls I'm extremely perplexed/frustrated. Has anyone else ever experienced something like this? I really want to be able to give this woman an amazing experience like I am able to, but so far I think it's only been accomplished once . Any input would be greatly appreciated!