Help! I think he’s cheating

I don’t have many girl friends in real life so I just need help. Background: my friend has never really dated. She’s 27. My friend fell in love a few years ago with a guy from work. He was engaged but swore he was breaking up with his fiancé. She got invested and then turns out the guy was sleeping with her other friend from work (and also stealing from their work). Cue heartbreak. Now she finally put herself out there to go on an actual date. Naturally I did a little google/Facebook stalking not expecting anything. He claimed he got divorced two years ago. Y’all according to everything he got married in late 2019 and is still married. How do I tell her?! Do I tell her? Do I fly myself to her state and scream at this dude? She’s so excited about him too 😞 I’m at a loss.

Edit: Yeah Facebook isn’t everything but they’re still listed as married on Facebook with a recent photo together. He wasn’t married two years ago so how did he get a divorce two years ago? There’s no court listing of his divorce. Their wedding registry proves he wasn’t married two years ago but actually one year ago. It all doesn’t add up 🤷‍♀️