Armie Hammer's ex-girlfriend 'tried to stab him during sex'

While condoms offer protection against sexually-transmitted infection and unwanted pregnancy, they may not be too great at stopping knives.

This is something Hollywood star Armie Hammer almost had to contend with during one of his relationships prior to meeting his wife-to-be Elizabeth Chambers, as he has told Elle magazine that one of his former lovers tried to stab him while they were getting down and dirty.

Hammer - who is the star of upcoming film The Lone Ranger and also appeared in The Social Network - revealed his ex-partner was keen to introduce a knife into the bedroom, stating: "She was like, 'true love leaves scars. You don't have any'. And then she tried to stab me with a butcher knife."

The actor indicated the bizarre incident was one of the main factors in his decision to split from the girl - although it was a further seven months before he brought the relationship to an end.