I don't know, if I had paid for a (likely expensive) plane ticket and was looking forward to some much needed vacation time, I think it would be kind of selfish of someone to ask me not to go because they didn't make the proper preparations. Financially it also makes sense for her to go so that they only end up paying for one additional ticket, not two. So she goes ahead, and OP can reschedule the flight and join her when he gets his stuff in order. Next time he'll be more careful.

This sounds like someone whom has seperation and controlling issues. Verbal domestic abuse I'm sure is evident with this mind set.

Yep. Because he's obviously a dipshit.

Most likely this didn't even happen. it's impossible to "have the wrong passport"

or a picture of her and the guy she meets there. ?

Precisely. His mistake for not making sure. I've traveled international before. Why should she miss out too?

He may like me, have two passports One for Work and one for Vacations. If he has a job which sends him worldwide he will need a separate one as some countries won't let you in if you have/had a Visa in your passport from another country they don't get along with politically. Or maybe he renewed it recently and he grabbed the old one instead of the new one

Women can do no wrong, didn't you know that? Hahah! Both times the person was an asshole. Most airlines cab allow you to switch flights so the guy could have gotten the right passport. She was selfish and same for the other post whose man left without her.