So a male friend texted me out of the blue after 3 years. At 1am...

I'm married now and we (guy who texted) haven't seen or heard from eachother in over 3 years. We went to college together (same class), last he (friend) saw me he knew I was in a serious relationship (we're married now).

I would respond if he texted me at a reasonable time. It's nice to catch up with old friends. But 1am has to be something else. Am I overthinking it?

I won't respond just curious. Is it normal for a friend who you haven't seen in a while text you out of the blue at 1am?!