“Couples don’t need to have anything in common,” said a male character in a novel I read recently. “The man can go to his club in the evenings while the woman knits or watches television.” Contrast this with a real-life couple I read about who made a vow they would only have interests or friends or pastimes they both enjoyed. If one of them didn’t like whatever it was, the other would immediately give it up in case it interfered with their love. The first example gave me a good laugh and the second gave me claustrophobia. It also got me wondering: is having the same tastes as your partner relevant when it comes to relationships? What should you do about dating with different interests?