Why would dumper be mad about unfollowing? Or about being asked out?

Basically I unfollowed him on LinkedIn because there was no reason to keep him there.
But I was following some of his friends and he sent me many messages while crashing out.

He told me that he should have known who I am earlier.
And the fact that I gave someone my number when he was still sleeping with me bothers him.
It was a month after he dumped me but I kept begging him.
I flew to his country to have last chance and a guy asked my number in a library but I didn’t want something more than friends with this random guy.
But at the same time I was lost with what to do because technically I was no longer obligated to care about his feeling.
I showed all the chat with this random guy where I said no to his dinner invitation.

But now that he found out I deleted him on LinkedIn, he is talking like I am a traitor.