Remember in the summer when we walked out on Hampstead Heath late at night? It was so warm that we had been in T-shirts and it was never entirely dark. From the top of Kite Hill we watched the glow in the sky over in the far east of London, and the office blocks of the City and Canary Wharf glowed wastefully even after midnight. We saw shadows and silhouettes around us, but we didn’t feel threatened by them. They were out walking like us, or even, some of them, sleeping under the stars, by choice or necessity.

As I walked up Kentish Town Road I saw a few other pedestrians, stragglers from last night or early birds heading for work. There were taxis and delivery vans and cars, because the traffic never stops, barely even slackens. But once I turned on to the Heath, I felt as safe as we had felt in the summer. It was too dark and cold even for criminals or mad people, except mad people like me who were just looking for one of the few places in London where you could escape. I walked up the hill so that I could look over the lights of London, distant and abstract and glittering, as if I was flying above it. I went further up the hill and to the right, and walked deeper into the Heath on paths lit only by the moon, finding my way by memory on routes I had taken dozens of times before. The early-morning air felt fierce and good on my cheeks.

Finally I found myself surrounded by the dim skeleton shapes of oak trees. I stopped and listened. There wasn’t even the hum of traffic that you hear everywhere else in the city. I was in the center of London and yet I was in an ancient forest as old as England. I looked up at the branches. Were they standing out more clearly as the sky turned from black to gray? Was the dawn coming? Sometimes on these winter mornings you couldn’t tell.

I started to talk to you, not because I thought you were somehow present, not in the wind that was shifting the branches, but because it was a place we had been together and that had somehow become a part of us. I told you the story of my life since you had gone away. I told you about my strange behavior, my madness, my distrust of you and then my belief in you. How it had been so hard, such an effort, how I had wanted to give up.