Rhys bemoans on-set romances

Welsh actor Matthew Rhys has dismissed rumours he has revived his relationship with 'The Edge of Love' co-star Sienna Miller - insisting on-set romances are "the worst idea in the world".

The 'Brothers & Sisters' star, 33, dated the British actress before she become involved with Rhys Ifans - and has been blamed by the media for the couple's subsequent break-up earlier this month.