Why can't I get hard while having sex with someone new? Every time I try to have sex with someone I can't get it up. What can I do to fix it?

Did you try foreplay?

Its prob just angst issues... or that you put too much pressure on the whole performing thing... but foreplay might fix it, as suggested above

Well you can stop having one night stands for starters...

It isn't supposed to be about self gratification.

Sounds like performance anxiety.

Instead of having sex with relative strangers just because it is the thing to do in your social circle, stop doing that and get to know a girl for a while to see if she really turns you on at some level and see if she really finds you an attractive personality to ____.

Good Luck!

Every time?? Maybe try getting to know them on an intellectual level and maybe you'll them find someone that turns you on in every way possible

Well you could be stressed out...

There are a lot of risk in the back of your head (stds... unplanned pregnancy... I'm sure people can name many more)

I suggest either settling down with a committed partner (insert sexual preference here) and have a loving relationship

Some guys aren't programed for bar sex

Settling down has benefits that are more than you can imagine if you love the person

Maybe you just don't feel any sexal attraction towards them,

Unlucky

This happened to me a couple times. For me I was just trying so hard to get up and going at her for the whole night, and my buddy wasn't feeling it I guess haha.
Don't know man. It's prob just a psycological thing. Too worried about puttin it to her then actually getting aroused and enjoying it I guess.
Just relax bro, that's all I did and I was good to go