We have a delivery guy that comes to our office daily. He's very flirtatious but I can't tell if he's interested. There is no ring so he's not married. I am embarrassed to ask him out because I don't know if he's seeing anyone and the fact that I have to face him everyday.
Don't assume someone isn't married, just because they're not wearing a ring. The best thing to do would be to slowly get to know him by asking casual questions or making casual comments. If he's interested, he'll keep the conversation going, and eventually ask you out. If he doesn't ask you out, he's either married, attached, gay or not interested.