The guys I'm referring to have one thing in common. They feel neglected and diminished in their wife's (or former wife's) eyes.
Last week, there was an interesting interview on Christian radio of two lady authors of a book titled "Intimate Issues". They said in interviewing a thousand women, they discovered only one in ten understood the Biblical role of sex in marriage. They claimed that their book helped many to see the light and turn their marital lives around.
Amazon.com readers rate it with five stars. I think I'll at least mention it to the friends who are unhappily still together.