Why does my friend have me blocked even though him and his girlfriend broke up?

I had this friend I used to work with and we became good friends. He had a girlfriend at the time we were working together. As soon as he left the company, his girlfriend at the time messaged me saying this is his girlfriend and that even though he and I had a great friendship that it had to end. So I gave them space then he broke up with his girlfriend a year later and I reached out and he blocked me even though he has asked my coworker how I was doing? What’s your thoughts on this?

Why does my friend have me blocked even though him and his girlfriend broke up?
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