Why do men not wear engagement rings?

I met this guy through professional means - he had the kindest smile and the warmest eyes, a really great way about his communication style and I really really started to like him.

As I was doing paperwork, I caught him smiling at me with such warmth. When I looked up, he straightened up and tried to stop the smile.
He even stayed 15min past closing time to go over some info and print out some things for me. Its a sales thing I know- he has incredible customer service and a really amicable way about him.

Our texts started off super professional, but then he started to use emoji's and even lightheartedly poked fun at me...(all on his side, I didn't initiate that).
I seriously was considering asking him out for a coffee to get to know him better after the business deal was done. (I. e. a date)

Luckily I decided to search his name on the internet and Fb popped up - it said he was single so i got sooo excitd. But then taking a closer look he has a profile highschool couple photo (super outdated), backdrop of him and a girl with a dog also. Very suspicious... so I kept looking online and I found out he's getting married this Aug!!!

I dont mind that he's super friendly, its refreshing. But like whyyyyyy dont people wear a ring to tell others they are taken? I come from an Asian culture where rings are worn as soon as someone is engaged so there's no misunderstandings 😫
Why do men not wear engagement rings?
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