Why is it men never break up with girls they no longer love?

My ex and I were dating for 2 years when I noticed he was seeing me less and less and he stopped bothering with me. He would never show me his phone which made me panic and every time I looked at it I’d find him on tinder and girls messaging him. I confronted him about this as he told me I shouldn’t have looked at his phone. I’m just wondering if he didn’t want to be with me and was searching for other females behind my back why couldn’t he have dumped me? And then he would have a easier life instead of pretending to me he wanted me and loved me?
Why is it men never break up with girls they no longer love?
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