“I’m married” is an explanation. You don’t owe anyone an explanation. You are just “being”there at the bus stop, or wherever. “No”, should suffice. Otherwise, you’re dealing with an asshole. That’s the time to put your thumb on the spray button. I talk to women in all public venues and they nearly always will carry on some kind of conversation with me. Maybe because the conversation I am having with that woman is the exact same conversation I would have with a man standing there. I think they sense that about the whole thing. Or I could be making that up. Really, I don’t know anything about women. They’re just people. I know that.