Don't blame it on "the pressure" lol. It's your fault you lost your virginity. Don't be a suck up and say "he made me do it" and crap like that... Grow up. Get over him and find someone else, you're...
Dude, just think of nervousness like this: It's a problem YOU cause for no reason at all which helps nothing. It does no good and it just makes you do things crappier than you usually would....