Seriously, that's a bit strange. Most guys aren't virgins anymore. But maybe he is, who really knows. My ex boyfriend use to go around bragging about how many girls he fucked and then he came to me one night and told me he was only lying. It shocked me because hey, maybe he just wanted to get into my pants because I was a true virgin.

He wants to insure his health. And if you were in his shoes then you probably would do the exact same thing. Maybe he's guilty because he might be the one with the disease. Take him along with you. If you have to go through that than so should he.