Kay

“The implication is that the authority extends to more than just sex, I would suggest to even things like providing for and caring for the body under their jurisdiction (Ephesians 5:28-29).
To me, 1 Cor 7:3-4 is simply an outworking of the concept of what it is to be one flesh, a concept that I believe relates to so much more than simply the act of sex…”

Dave,
Yes, my sentiments exactly. The sex act is THE defining difference between marriage and all other relationships, and it is certainly not something that can be compartmentalized from the rest of the relationship. What happens outside the “bedroom” will certainly effect what happens inside, and vice versa. One-flesh doesn’t split in two upon leaving the bedroom.