I find this fascinating.

FTA:

Sociologists believe the lower rates of ‘divorces’ among gay men may reflect a trend of women committing sooner and having higher expectations for a relationship (not quite). Women in civil partnerships tie the knot at an average age of 37.6, compared to men, for whom the average age is 40 (2 year difference to be expected since women mature slightly sooner than men).

First, there's only a 2-year difference in average age and we're talking about a massive difference in final dissolution? I am more sympathetic to their other hypothesis, that women are simply harder to please in general, therefore they are more prone to divorce initiation. Indeed, happiness research proves women are less happy than men, and have lost ground since the 1970's on a relative and absolute basis which is a paradox since our society's environment has improved for women in general since that time.

Gunnar Andersson, professor of demography at Stockholm University, has found in successive studies that women in Norway, Sweden and Denmark are twice as likely to dissolve their civil partnerships than men. He said: “This reflects trends in a heterosexual marriage because women are more prone to say they want to marry - but they’re also more likely to initiate a divorce. Women usually have higher demands on relationship quality, that’s often been said in studies. Even if you control for age there is still a trend of more women ending partnerships than men.”

Getting closer to truth here.

Jane Czyzselska, editor of the lesbian magazine, DIVA, said: “Culturally women have been more conditioned to be focused on marriage than men. The stereotype of the lesbian couple who take a U-Haul on their second date, move in and get cats is there for a reason. Because of the cultural conditioning that we have, women do seem to be committing faster.”

Because culture, it explains everything, yet there's only a 2 year difference in average age of civil unions. But since we can't prove or disprove it readily, it's a perfect explanation to muddy the water. Except culture changes very slowly, so in terms of current mating expectations, I would argue it's irrelevant for anybody alive today. Perhaps in 150 years it will be different, but we won't be alive to see it. Perish the thought that any of this could have even a partial biological explanation.

Source:

http://www.independent.co.uk/news/uk/home-news/lesbian-couples-twice-as-likely-as-gay-men-to-end-civil-partnership-as-divorces-up-by-20-8866454.html