Sex talk here

OK.. so i've been having sex with a very good friend of mine as of late. it was kinda a non planned thing. Its nice though, because Ive known her for years and care alot about her. Anyways, I find that the first time we did it, I was so nervous that I had a problem keeping it up. The second time I felt more comfortable, and I was able to keep it up but I had a problem coming. It felt really good but the urge never came. Anyone ever have an experience like that? Ladies, havr guys youve been with had this problem? I never had that problem when having sex with the ex, coming was natural and easy, as with my penis staying large. Any ideas as to whats going on here?

How strong is your desire for her? Perhaps there is insufficient chemistry with her.

Its a mental block maybe? You've been like sister/brother for so long that perhaps it will take some time for your head and your penis to get on the same page.

I've had sex with a few different men who have been too nervous to stay hard, or to achieve orgasm. One of them I'd been friends with for over ten years before we ever hooked up. We decided to stop before penetration because he was just too nervous. He was very open with me about being nervous and he said, "it wouldn't be as good as [he wanted] it to be" because of nerves. The next time we got together, there was no issue for either of us. We were both nervous, but nothing unexpected when you first start having sex with someone new. There's the first time you ever have sex, and then there's the first time you have sex with a new person. There are so many variables that can affect the energy between you and a new sexual partner. I know for women, mental interruptions can drastically slow down, or even ruin, her chances for orgasm.

I don't think what you're experiencing is abnormal. I suggest you continue having sex with her and see if it improves as you grow more comfortable with each other, sexually.