Is it okay/normal to say mean things to someone's face because they rejected you?

This may seem like bait, but I'm asking a genuine question. This happened to my girlfriend where she rejected her former best friend (in a nice way…

This is why people ghost.

I date and I meet a lot of ladies who can’t take rejection without insults and harassment being given in return.

Yeah… it really is a shame. Like imagine being best friends with someone for 3 years only to turn on them because they didn’t like you back? Some people you can never be JUST FRIENDS with.
A lot of people only see other people in terms of transactional relationships. Once you stop giving them what they want out of you, they have zero use or interest in you.
Yeahhhh