How do you trick your mind?

I'm in an awful relationship with a man who obviously doesn't like me. Thing is he completely lied about who he was and what he wanted so I already caught feelings and probably a trauma bond. For whatever dumb reason I am having a hard time letting go and despite me saying ok when he talks about wanting to leave he doesn't. So how do I trick my mind into thinking we aren't (technically) in a relationship so I'm not as invested in what he does or even talking about things. I really wish I could let this go because my mental health is awful.

How do you trick your mind?
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