What kind of person doesn't say thank you to birthday wishes?

Anonymous
An a**hole? Someone who simply doesn't care?

I'd like to know. This one guy I am acquainted with never bother to say thank you or to "like" the birthday wishes he gets. It's not the first time he does.

I find it extremely rude and rather unexpected from him (but he's been doing this for many years now). He's rather friendly in person and has many friends. He's the only person I know to do this, most people I know say thank you or send a message to all ..

So what does this say about someone?
What kind of person doesn't say thank you to birthday wishes?
3 Opinion