Childhood sweethearts Sam, aged 35, and Kate, aged 31, are a married couple.

They have never had sex with anyone else but their relationship is in a rut.

Rather than counselling the couple decide to pick up the juicy Lucy, aged 25, in a nightclub and make the couple a threesome.

The play followed what happened when the threesome go back to Lucy's flat at 3am, drink whisky and snort coke.

The language was graphic; the dialogue was very, very funny.

Chris Willoughby's performance was a comedy master class as he squeezed every last drop of laughter from his predicament as the man stuck in the middle.

Gemma Rook, his repressed wife, was a perfect feed for Willoughby and crucially they were totally convincing as a couple. Substitute therapist, April Pearson, was temptation itself and one could believe she had slept with a thousand men.

This show was sold out and the response at the end was unanimous. Willoughby's underplayed and hilarious character must be one of the comedy highlights of this year's fringe.

Threesome will be part of this year's Brighton Comedy Fringe in October.

Four stars