I can't get it up

Male physiology was clearly designed by an idiot.

In order to have an erection, a muscle has to _relax_ to allow blood to flow into the penis.

Lots of things happening in the guy's head can cause that muscle to tense and prevent blood flow, thus making the erection fade. Feeling self-conscious will definitely do it, and when it has happened once, just the fear of it happening again makes it more likely.

Like I said, the design is pretty fucked up.

Sex does not have to involve a penis in a vagina. Only a minority of women are able to reach orgasm by penetrative sex alone, so it's really not crucial in order to be a good lover.

It sounds like the girls you've been with have enjoyed what you've been doing with them, and that's great. I'm sure it's not easy, but I think you just need to try to relax, stop fretting about getting your cock in the pussy, and focus on enjoying what you can do for them, and what they can do for you with their hands and mouth.

If you're really desperate to get over this hurdle, then consider trying an erectile dysfunction medication. I had to deal with something similar to what you're experiencing once, and I found a low dose of Ciallis was a huge help. Once I'd had success with a little chemical assistance, my head sorted itself out, and I didn't need it any more.

You to see a doctor your testosterone may be low if it is he will prescribe you testosterone and you'll be good to go. If that's not the problem he may prescribe viagra or or something but you defently need to see a doctor.

It's all in your head. Just try to calm down :)