It seems Harry was right when he told Sally then men and women can’t just be friends.

Research at the University of Wisconsin in the US has shown that sexual attraction is a major factor in men’s friendships with women, and it doesn’t matter if they’re single.

A study of 88 pairs of friends found women were more likely to class their relationship as platonic.

The theory provided one of the most famous lines from the 1989 movie ‘When Harry met Sally’.