Is recreational sex after marriage acceptable?

No, recreational sex (swinging) is considered adultery even if it is agreed upon by both partners. God didn’t make sex to be shared with anyone else except between a husband and wife. The Bible says, “Marriage should be honored by all, and the marriage bed kept pure, for God will judge the adulterer and all the sexually immoral” – Hebrews 13:4. The Bible also says, “For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh” – Ephesians 5:31. This “one flesh” union is reserved for a married couple only and if it is broken it is adultery.