Ladies/Guys please read/help!

R • Nurse, pre-med student & Jeep lover!

JUST started sleeping with a friend who has been interested in me for months. The first couple times were FANTASTIC. We started dating and the relationship part is going perfectly . He was super nervous when we first had sex and but we got there and it was great! But now He’s having a tough time staying hard while we’re having sex. I know he is nervous about wanting it to be great and wanting to be better than my last guy (who he knows). I can usually make him cum in a couple minutes or less but today I couldn’t get him to at all. He was into it and rock hard but said he just couldn’t cum and didn’t know why. Any ideas, advice or tips?! I’m worried that if we can’t get it back, it will have a bad effect on our brand new relationship. I asked if it was something I did and he said no. He has no problem getting hard and wants to have sex multiple times a day. When we first start, he gets to the edge of orgasm and then we stop because he feels it’s too quick. After that, no matter how hard he gets, he can’t cum.