One does not have to inspect cultural norms too closely to conclude that it is a lifelong priority for both men and women to have a partner, spouse or significant other with whom to be sexually intimate. We see evidence of this drive for intimacy in the lives of everyone we know, and see it reflected as well on television, in popular movies, in the explosion of internet dating sites, and within most works of literature. The desire to enter into emotionally satisfying and sexually intimate relationships and to maintain such relationships underpins adult human experience. In fact, most people do sustain such relationships for much of their adult lives, and most routinely reflect on the quality of their relationships throughout the life cycle. Satisfying intimate relationships are considered highly relevant to overall health and mental health, for everyone.