This is so fascinating - I heard it on BBC News on the way to work and it's written up in The Times as well. As the headline says:
"The Pill may put you off smell of your man and ruin your relationship"
Read it. Seriously.
"Commenting on the latest study, the researchers said that it could indicate that the Pill disrupts women’s ability to judge the genetic compatibility of men by means of their smell.
They said that this might not only impact on fertility and miscarriage risk, but could even contribute to the end of relationships as women who stop or start taking the Pill no longer find their boyfriend or husband so attractive."
Definitely one to file under "whodathunkit?"