I met a guy that's married!

I met this guy at a bar and I asked him for his number. Before I asked him I asked if he had a girlfriend and he said no. We've been texting for a couple of days and I asked if he wants to hang out and he said absolutely but he hasn't made any real plans to hang out. I was getting suspicious so I looked up his number on facebook and found his facebook. At first it looks like he doesn't have a wife/girlfriend but then I found this girl with the same last name as him and come to find out it's his wife. They could be separating because they're not even friends on facebook. Maybe he just doesn't want to tell me his whole life story yet. I'm not sure if I should play it out, confront him or just leave it alone or should I even say something to her.