For twenty-one years, my husband was the only man who touched me.

Then I confessed the fantasy I had kept hidden for years: I wanted Rob to watch another man take me.

Two weeks later, he books us a hotel in Bath and sends me to the bar with one rule. Either of us can stop at any time.

But when a stranger named Callum kisses me, Rob sends me back for more.

Soon my husband is sitting beside the bed, telling another man exactly how to make me lose control. And when I forget Rob for a few dangerous seconds, his jealousy only makes him want to keep watching.

We thought this would be one night.

By morning, neither of us is so sure.