Relationships aren't about sex RULE 10 Great sex is a wonderful thing. And if there isn't any sexual attrac- tion, even at the beginning, the relationship doesn't stand much of a chance. But the best relationships will last a lifetime, and your libido may not. If the relationship is built on sex alone, you'll be in trouble once you have to deal with children, money worries, elderly parents, career problems and everything else life will throw at you sooner or later. A good romp in the bedroom just isn't the solution