So they are no longer two, but one flesh.
-Matthew 19:6a, NIV
The cheater approaching the affair as “self-care” or something “finally, for ME!” is self-deceived.
You cannot sin against the marriage without also sinning against yourself. This is what the Judeo-Christian concept of marriage teaches us. The marriage partners are ONE.
An affair certainly is harmful for the faithful spouse (see here). It causes a fracture in the closest of human relationships. This is anything BUT a health-producing act.
Adultery is damaging to all involved.
The cheater does not just break faith with his spouse; he also breaks faith with himself. Adultery fractures the cheater’s integrity…deeply.
This means…
Affairs are self-harm, NOT self-care!!!
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*A version of this post ran previously.