Thanks for all the comments so far. Dale, I think you are right about the desire to nurture and be nurtured being experienced by both men and women. YP, women too, 'look out wistfully on potential conquests' and this is where the difference comes, I think. Whereas men are wistful and then move on, women tend to get stuck there and find it hard to move on. Is it all to do with men's ability to compartmentalise their lives or maybe women's desire to nurture? It seems to me that women have an almost infinite capacity to forgive neglectful or thoughtless treatment by the men in their lives and find it so hard to give up on a bad job and walk away.