Should I tell this married guy to smarten up or just ignore him?

Ok I met this guy through a website just recently. We already exchanged several very friendly messages so I decided to do some snooping. It wasn't hard to find out more about him since he is one of a handful of teachers in a very tiny town. Guess what their school newsletter said he got married on Monday. Technically there was nothing really wrong with his messages, like they didn't say he was single (it was not through a dating site that we met) but very chatty and personal and acting single, like pointing out things we have in common. Shouldn't he be, like, too busy to be chatting up women he doesn't know?!! My question is if I should follow my urge to write and tell him he's a moron and he shouldn't be doing this, or if it's better to just stop writing and not say why.