What am I suppose to do?

Right now you can't do much because it's over. You should try to find out in a nice way why he seems to regret having done it after having talked about it for so long. Maybe he was expecting it to be like an atomic bomb or give him some sensation that he never had before. I hope you know that once a guy has his orgasm he has a temporary feeling of being not as interested as he was before. Maybe you didn't orgasm like he thought you would and part of that blame is his for rushing. Having sex is serious business and the ultimate joy comes from deep love and commitment between the man and woman and bonds them together even tighter because from that sexual act can bring children and a lifetime of of love and responsibility for another person(s), but in a different way. Even though you didn't rush into having sex, it goes to show that as a couple that's not married yet, having sex doesn't usually make the couple happier, more satisfied or in love more. Maybe sometime is does, but usual it's to the contrary because now you've done it all and I' m sorry that it turned out to be a bad experience. Maybe you weren't as good a "lay" as he thought you'd be. Maybe you hadn't kissed and fondled enough ahead of time. You didn't say if you were a virgin or not, or him. Maybe the timing WAS poor. You want to be in an extremely loving mood and willing to make a life's commitment before you have sex with a guy. Having sex was never designed to be a fun and games thing. Only a deep love and life lasting commitment thing. Otherwise, it's risky. But good luck and don't give up if you love him. This doesn't need to be the end. Let this experience only serve to bond your relationship closer if that's what you want now but make sure to talk about it. Good luck!

Were you an active participant or did you just lay there?

My son related his losing his virginity story to me years ago. He said it was terrible. She just lay there and let him do his thing. He had expected some mind-blowing experience but it wasn't any better than jacking off and it was disappointing.

Well it seems like it's a little too late but just hold off on sex again until he prompts you. Sometimes us guys have bad experiences and do not want to have sex (its rare but it happens). But good luck but if you have any more trouble post it up here to help!

Nothing. Unless you can build a time machine. Ask him why it was bad timing and why does he regret it?