Richard Smith's News-spunk!
Scientists may have just discovered why your boyfriend keeps shagging round.
According to newly published research by Robin Dunbar and Susanne Shultz at the University of Liverpool, it's the animals with the biggest brains that are monogamous; foxes, gibbons and most monkeys.
Seriously dumb animals fuck like, well, rabbits. Elephant seals - clearly the Jade Goody of the animal kingdom - get through 100 sexual partners each mating season.
So basically, it serves you right for going out with someone who's even lower down the evolutionary scale than a chimpanzee.
Happy Valentine's Day!