Few of us have been spared the agonies of intimate relationships. They come in many shapes: loving a man or a woman who will not commit to us, being heartbroken when we're abandoned by a lover, engaging in Sisyphean internet searches, coming back lonely from bars, parties, or blind dates, feeling bored in a relationship that is so much less than we had envisaged - these are only some of the ways in which the search for love is a difficult and often painful experience.

Despite the widesp ...