Is it none of my business?

I think my friend is seeing a married man...

They met at their jobs at Starbucks and things are definitely not adding up and it's sketchy.

First off there's an age difference (which isn't always wrong, but I think it adds to my suspicions.) He is 33 and she's 19.

He lives with his "ex-wife," but claims it's so he can be close to his daughters, and says he has the basement.

He constantly ghosts her for weeks or longer.

He will only go on dates with her before or after his shift, and pays in cash only. Half of their dates are just driving around and doing nothing.

He claims he had this huge corporate job and made 6 figures, but left it because "corporate life isn't for him."

My friend is totally oblivious and thinks he's being truthful. She claims she ran a background check on him, but I'm pretty sure she would need more personal info of his like is SSN.

Anywho, I found his profile on FB which says "in a relationship" which could be my friend or it could be is wife/baby momma. There's pictures of them together, but it's always one with their daughters so...🤷🏻‍♀️

I found his wife's profile. It says she's on a relationship, too. I know I shouldn't reach out, but it's so so tempting. (Not actually planning on it) I just can't help but feel like this guy is up to something and hurting his family. Should I stay out of this? Or should I do something?

Sorry if this is dumb question, I'm also 19 and not used to dealing with such adult issues in relationships...