These days grief seems like walking on a frozen river; most of the time he feels safe enough, but there is always that danger that he will plunge through.

He's wearing his official university sweatshirt again, which puzzles me a little. I mean I'd sort of understand it more if it said Yale or Harvard or something, because then it would be a fashion choice. But why advertise the fact that you're at a university to all the other people who are at the university with you?

Occasionally, very occasionally, say at four o’clock in the afternoon on a wet Sunday, she feels panic-stricken and almost breathless with loneliness. Once or twice she has been known to pick up the phone to check that it isn’t broken. Sometimes she thinks how nice it would be to be woken by a call in the night: ‘get in a taxi now’ or ‘I need to see you, we need to talk’. But at the best of times she feels like a character in a Muriel Spark novel – independent, bookish, sharp-minded, secretly romantic.

Emma was a shocking driver, simultaneously sloppy and petrified, and for the first fifty miles had been absent-mindedly driving with her spectacles on top of her contact lenses so that other traffic loomed menacingly out of nowhere like alien space cruisers.

You must do what you enjoy.

It would be inappropiate, undignified, at 38, to conduct friendships or love affairs with the ardour or intensity of a 22 year old. Falling in love like that? Writing poetry? Crying at pop songs? Dragging people into photobooths? Taking a whole day to make a compilation tape? Asking people if they wanted to share your bed, just for company? If you quoted Bob Dylan or TS Eliot or, god forbid, Brecht at someone these days they would smile politely and step quietly backwards, and who would blame them? Ridiculous, at 38, to expect a song or book or film to change your life.

As the possibility of a relationship had faded, Emma had endeavored to harden herself to Dexter's indifference and these days a remark like this caused no more pain than, say, a tennis ball thrown sharply at the back of her head.