Tess Nichol talks to Laura Mucha about the truth when it comes to sex and cheating.

For a book about love, the opening pages of Love, Factually are a bit of a downer.

A reader curious to learn about the life affirming secrets of love will instead discover mere moments after cracking the spine that any coupled person they meet is more likely than not to have done the dirty on their partner.

Studies into infidelity have varied results but those at the higher end found nearly three-quarters of men and a similar number of women admitted to cheating on