How Often Should Married Couples Have Sex? - WSJ.com: "Last year, Mr. Mower read a book ("Passionate Marriage," by David Schnarch) that inspired him to throw out the graphs. He asked his wife to read it, too, and told her they had to work together on a healthy sex life to save their marriage.
"He said, 'It feels like you don't love me'—and that really, really scared me," Ms. Mower recalls. "I decided to raise my game. I let myself feel what I really felt and tried to dig into what had always been buried." It was a plus, she says, that reading a book about sex made her feel sexy." (read more at link above)