Ha! Please, don't make me laugh. Men are dumb, but not complete idiots. If you try to pull that off on any man, they'll know. I know that not all women bleed when they have sex for the first time. 99% of them however do. Unless you're willing to tell him that you're one of the few that doesn't, and that you're somehow not nervous at all, go ahead and try it out. I must admit though, I have told many men that I was still a virgin, and they didn't even consider the fact that I wasn't shy or that I wasn't bleeding. I say, if it worked for me, it could work for you.