Why would a man want to intentionally hurt you after telling him that you are protecting your emotional and mental wellbeing?

I tell him that and he asks if I’m sensitive and he goes on and attempts to make me feel safe just for him to hurt me in the end…. And I also suspect that he may have a gf….

But why hurt someone who is telling you and begging you in the beginning to not hurt her and that she’s not even looking for anything… but you smarty play her and do mixed messaging

Sometimes I wish I didn’t exist
Why would a man want to intentionally hurt you after telling him that you are protecting your emotional and mental wellbeing?
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