Gee BioMatty, I'm sure all the HIV guys reading this thread just love your optimism and compassionate tone.
Xanadude wrote: "Besides, what is the difference between practicing safer sex with someone who is positive but undetectable with medication, and having sex with someone who's status you can't verify?"
BINGO! When you hook up with someone, you have no reliable means of determining his HIV status, or whether or not he might be carrying other STDs. I see profiles and ads online says things like "clean only" or "neg 4 neg" or "bug free. you b 2", etc. These people are living in a fantasy world if they think that everyone is going to be honest, know his or her status, etc. Furthermore, as Xanadude points out, such language is derrogatory and insulting. There's nothing wrong with knowing your status and wanting to date someone with the same status. It's how you say it that matters.
If you have sex, you must allow for the possibility that your partner could be positive. Only when you have established REAL trust - not imagined - and been tested together should you consider unprotected sex. And, given the overwhelming lack of fidelity in gay relationships, you're always taking a bit of a chance.