Not just when you feel like it but when you don't.
What did you do when you were courting her? Was there someplace special you would go just to talk? Something you did that always made her smile? Make a special date, but don't tell her where you're going. She'll be intrigued by the mystery and very pleased that you remembered.
If you want a great marriage....yes. The happiest, and most lasting marriages I know of are the ones in which the man recognizes that his own happiness is completely dependent upon that of his wife. They are also marriages in which both spouses understand God's plan for marriage. Others have spoken of intimacy. "Sex" for its own sake is spiritual junk food that tastes good at the time, but an hour later, you're hungry again. Intimacy, on the other hand, with or without sex, nourishes the the soul of the marriage and continues to satisfy long after the moment has passed; a deep and lasting satisfaction that permeates every other part of your lives. The scriptures talk about delighting in the wife of your youth. It mentions nothing of how to get her to have sex with you, but instructs you not to withhold yourself from her. When was the last time your soul delighted in your wife?
I think he was spot on in both cases :o)