Looking for the perfect Valentine’s Day gift? For a man, sex would be your best bet, says Scott Haltzman ‘82 MD’85.

“It’s not about power,” in a relationship, said Haltzman, a clinical assistant professor of psychiatry and human behavior. “It’s about trying to figure out what needs your partner has.”

Sex is something that will keep men happy, Haltzman wrote in the fifth chapter of his new book, “The Secrets of Happily Married Women: How to Get More Out of Your Relationship by Doing Less,” which was released last month.

The crux of Haltzman’s book can be gathered from the chapter titles alone: Chapter 1: Know Your Husband, Chapter 2: Nurture His Needs - and Yours, Chapter 4: Talk Less and, of course, Chapter 5: Have Lots of Sex.

“Haltzman gives readers a pragmatic approach to relationships. He’s not politically correct and doesn’t try to be polite. But his writing is funny, enjoyable and addresses fundamental differences between men and women,” said Alan Windsler, Haltzman’s editor. Windsler works for Jossey-Bass, a San Francisco-based publisher.