STDs and sex: What you're obligated to disclose

This super dominant dude has been all into me the last couple days. He has a primary partner/girlfriend, and has been chatting me up/calling me/texting me. So we get down to the STD conversation, and turns out he won't play with me, not because I have herpes, but because one of my regular partners does. Is this normal? Was I even obligated to discuss that? Should I have even mentioned it? I mean, in a way, I was sharing someone else's secret. I'm totally unsure of my ethical obligations in this case. Do I have to tell everyone I might potentially have sex with that one of my regular partners has it?

Anna Pulley, @annapulley

January 18, 2012