Light travels differently in a room that contains another person; it reflects and refracts so that even when she was silent or sleeping I knew that she was there. I loved the evidence of her past presence, and the promise of her return, the way she changed the smell of that gloomy little flat. I had been unhappy there, but that was in the past. It felt like being cured of some debilitating disease, and I was jubilant. ‘Domestic bliss’ – the pairing of those words made perfect sense to me.