Is it inevitable a guy will cheat if his partner rarely wants sex?

And presuming ending the relationship isn't what he wants. Maybe due to fear or financial reasons, complications in separating, kids involved.

My belief is be single rather than cheat but I've been learning life is rarely as black and white as this.

Should the woman be held responsible that her partner ended up cheating if she didn't want sex and refused to deal or communicate with him about this?

Is it inevitable a guy will cheat if his partner rarely wants sex?
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