While I was staring at my wife, Stuart took his phone out of his pocket and wandered out of the kitchen. I followed him. ‘What the hell are you doing?’ I demanded. ‘Who are you calling?’ The look he gave me was shifty, and he tried to turn away from me. Needing to know who he was phoning, I lunged at him. He squirmed away, running back into the kitchen, attempting to thumb the phone as he went.