maybe he has a twin who decided to give your date a payback by switching their names on Facebook... no? well I tried...

You should really read "The Eight Reasons that People Cheat on Their Partners" by Susan Krauss Whitbourne and "Forget Why Men and Women Cheat, Here's Why they Don't Cheat" by Jackie Pilossoph. Maybe you'll come out of the relationship bubble you live in where everything is black and white. Like I said before it doesn't excuse the cheating, but it may give reasons to why people cheat that reason not necessarily being because they don't love their partner anymore. Oh, and if you really think most people could easily communicate their problems in a relationship before they cheat than there wouldn't be do many FML's about cheating.

He MIGHT be separated or getting divorced...

It's only a problem if you say something.. :p

I know this is FML but it seems like someone always has a hidden marriage or so

Before you end up a home wrecker, call him out on your find and walk out! I'd tell the cheater's wife myself!

You never know, maybe they were recently divorced and it could've been because they weren't ready for the baby.

Holy hell, PLEASE be kidding.

I'd like to propose open season on guys like this.

You should find the wife's profile and send her a message telling her everything.