Being unfaithful requires a lot of energy and attention to detail. The lying alone is an exhausting business that requires an excellent memory. The pressure of leading a double life inevitably leads to loose ends, little clues that pile up into evidence of odd behaviour.

Guilt makes people act in strange ways. Some men secretly want to get caught because they haven't got the guts to admit that they are playing away. If you suspect your man is being unfaithful, here are a few things to look out for. Taken individually each could be perfectly innocent; cumulatively they are some of the danger signs...