I couldn’t believe that he went home to her every evening, or that they ate dinner together and sometimes watched films on their TV. What did they talk about? Did they amuse each other? Did they discuss their emotional lives, did they confide in one another? Did he respect Melissa more than me? Did he like her more? If we were both going to die in a burning building and he could only save one of us, wouldn’t he certainly save Melissa and not me? It seemed practically evil to have so much sex with someone who you would later allow to burn to death.