A Time Allotment Formula for a Successful Marriage. The following appeals to me - I like formulas and menus that I can set in place and not think about anymore.

Whatever the focus of your [exclusive] time together [as husband and wife], be sure to set it aside. Our guideline for your private relationship - romantic and physical - is fifteen minutes per day, one evening per week, one day per month, and one weekend per quarter. We suspect following that formula for time to connect and care will leave both of you happy and satisfied.

From Penner, Clifford & Joyce, The Married Guy's Guide to Great Sex - Building a Passionate, Intimate, and Fun Love Life.

I suspect so!