How do I accept that men fantasise about other women while in a relationship?

Before you answer, hear me out. I'm often called ''jealous'' or ''insecure'', I'm here because I'm tired of being misunderstood. My problem is this: I don't care how loyal and respectful a man is. If a man has to control his impulses to avoid cheating, he's not loyal. He wants to have sex with other women the same way he wants to have sex with me, which makes me feel like an interchangeable object. It makes me feel used. I can appreciate the effort, but it does not change the fact that he wants other women. I'm not jealous, my reaction is not ''oh please, stop looking at her, it hurts me!'', my reaction is ''you want other women the way you want me, I don't want to feel used, I want to be unique''.

How do I accept this?

How do I accept that men fantasise about other women while in a relationship?
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