I am a 20 year old male that has only had sex once when I was 18 that went fine with no problems whatsoever with the girl I was friends with. The second and third time I tried to have sex with the girlfriend I was with at the time, failed miserable where I couldn't even get hard. I think I've conditioned myself to only get off with porn which irritates me. The girlfriend I was with was kind of boring where she just laid there like a fish out of water, so it might have bored me. But I'm nervous that this would happen again with a different girl and I don't want it to happen. I masturbate between 1-2 times a day, and like I said I feel as though I've conditioned myself to only get off masturbating. What should I do, I don't want to feel that insecurity again :(

Stop masturbating? At least tone it down to every second day or twice a week or so.

How are you masturbating? Death grip? Loosen it up a bit. Make sure your finger and thumb don't overlap. Get used to a lighter touch.

A woman who just lies there... I don't think it plays a role, but it could. I wouldn't count on it though.

Lighten it up and let us know.

It might be a while before I try to have sex again, but it just hit me all at once. I'm worried even though I shouldn't be. I just want to be prepared because there is this girl and it might come to this. I'll try and lighten up a bit though.

The worrying could be the entire issue. It is difficult not to worry being inexperienced .And trying to perform like the people in the porn. That isn't going to happen.
They can cut and restart, and have the benefit of viagra and similar aides.

Worrying about performing can cause all kinds of problems and inability to get an erection is usually#1.
Slow down and try to be relaxed.

You could cut down on the masturbating and not spend so much time time watching porn. These could be distracting mentally and also hamper performance if you've got yourself off right before you try it for real.

I'm going threw the same thing sometimes I can't get hard or even I loose my hard in the middle of sex.I fould out when I have sex I often think about something completely different like working out or what I'm going to do when I'm finished.you need to not jack off because when its time to have sex you won't be as horny as you would be if you didn't do it so much.I think you should try a diifernt position stay focused on what your doing and don't worry so much