Is emotional cheating worse than physical cheating?

Is emotional cheating worse than physical cheating?

My wife thinks it's much worse, and she says this what concerns her the most.

She says it doesn't bother her when she sees another woman flirting with me or leaning over me, but when she thinks someone is trying to get close to me emotionally she sees a threat and steps in.

Is emotional cheating worse than physical cheating?
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