If he ignores me why is he possessive?

He used to love me nd I never returned his feelings. And we never talked for 4 years as I didn’t want to stay connected to him. When I broke up with my boyfriend, my ego walls fell and I realised my mistake and rudeness. So I decided to correct it by talking to him, ask his pardon and explain my situation and immaturity then. But he blatantly ignored me. Yet he stayed connected as well. As he was giving me mixed signals, I decided to let go. That’s when I realised he is upset and annoyed at me for my new dates and hookups. He is super pissed and annoyed and the worst part is, he makes it obvious. And even though we don’t talk, he always wanted to connect with me on at least one app.

If he ignores me why is he possessive?
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