without knowing exactly what motivations are behind it. Pair bonding covers far more possibilities such as co-operation to protect territory or to improve social standing or boredom/frustration or liking a bit of cock. It also doesn't distinguish it from heterosexual relationships which may serve the same ends aside from procreation in other circumstances. It's suitably fuzzy I think.
(, Wed 8 Jul 2009, 13:59, archived)