You can't build a fire in your lap and not get burned (Proverbs 6:27), and you can't have multiple sexual partners and not become desensitized to the beauty and intimacy of marital intercourse.
When observing porn, a person shifts from an I-Thou relationship to the place of the Other, forever outside, waiting to be invited in. That invitation never comes, leading to an endlessly frustrating search for fulfillment that can never be met.
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