I don't know what is wrong with me. I first started having sex with this girl and I came way too fast, after a few more times I was able to keep it up and not ejaculate for almost an hour. Now the last 2 times I seem to be going limp after a few minutes. I think it might be mental, I'm 31 Y/O. I think I get start getting nervous and thinking that it might happen again and then it does and then I can't get it up again. How can I mentally overcome this? I am really embarrassed this is happening after making so much progress a few days ago. Of course alchohol might have been a factor?? She thinks that I might not be turned on by her anymore but I don't think that is the problem at all.