What makes a man feel butt hurt when the girl he doesn't want to deal with decides to move onn?

The guy was madly in love with me. The relationship failed and he was hurt to acknowledge my presence in his life. Although I tried to explain my situation, he didn't want to deal with me.

So I decided to move onn. Then he acts butt hurt whenever he sees me with a new man. He tries to spoil my dates. Although he never contacts me directly, he always ensures we have one form of communication line open.

What makes a man feel butt hurt when the girl he doesn't want to deal with decides to move onn?
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