Thank you all for such thoughtful responses; they really helped!
I gave it some thought and came up with this: It doesn't seem to me that it is the virus itself most people fear (since it is such a non-event), but the possibility of getting it and having to disclose in the future which means facing rejection each in a very visceral way each time you go to have sex. You have to be a very secure person to be able to face another layer of rejection possibility. This guy, in many ways, showed a lot of insecurities and my experience with insecure people is that they eventually try to drag you down with them. I don't have any time for that.
Interestingly, it turns out this guy's ex-girlfriend is a friend of a friend and I was able to get some insight that also helped. Apparently, he had a lot of controlling behaviors, and already lied to me about the reason for their breakup. If a man can't be honest about that, and I also hear he's got some control stuff, I'm going to stay away anyway. So, yes, H was my wingwoman!!! Bullet dodged.
That's not to say I'm feeling completely confident, but I definitely have some shifting perspectives on this and disclosing.
I have to say, though, I'm looking forward to that day when MOST people get that H is not a huge deal (kind of like HPV), and just accept it as a part of being sexually active.
That, or the day there is a vaccine... :)
Again, thank you for all the support! It means SO much!