I had a terrible terrible reputation when I was at uni. Probably worse than you could ever imagine (though STD free thank god)
I told my boyfriend the truth and he still loves me, wants to marry me and hasnt judged me. It's not necessarily the be all and end all. There are some men and some women that can look past that and have faith that I am happy with him and that he's the most special person ever.
He's relatively inexperienced although he has had some alternative sexual experiences himself, so maybe it's just that he has an open mind when it comes to sexuality anyway. That's what it boils down to.
EDIT: I havent committed any crimes btw....just had a whole lot of loving. A lotta lotta loving