They thought the country, too, was a scream, especially California. We had a lot of fun together laughing at the Americans, who just then were entering that stage of doomed hedonistic gaiety through which we, the gilded children of poor old raddled Europe, had already passed, or so we believed. How innocent they seemed to us, with their flowers and their joss-sticks and their muddled religiosity. Of course, I felt a secret twinge of guilt, sneering at them like this. I had been captivated by the country when I first came there, now it was as if I had joined in mocking some happy, good-hearted creature, the fat girl at the party against whom only a moment ago I had been pressing myself, under cover of the general romp, in wordless, swollen ecstasy.

Perhaps contempt was for us a form of nostalgia, of homesickness, even? Living there, amid those gentle, paintbox colours, under that dome of flawless blue, was like living in another world, a place out of a story-book. (I used to dream of rain – real, daylong, Irish rain – as if it were something I had been told about but had never seen.) Or perhaps laughing at America was a means of defence? It's true, at times it crossed our minds, or it crossed my mind, at least, that we might be just the teeniest bit laughable ourselves. Was there not a touch of the preposterous about us, with our tweeds and our sensible shoes, our extravagant accents, our insolently polite manners? More than once I thought I detected a suppressed smile twitching the lips of some person who was supposed to be the unknowing butt of our ridicule. Even among ourselves there were moments of silence, of awkwardness, when a half-formed admission hovered between us, like a bad, embarrassing smell. A trio of expatriates meeting in this mellow playground – what could be more novelettish? We were a triangle, for God's sake!

We were a triangle. It happened, the inevitable, one afternoon a month or so after we met. We had been sitting on the porch at the back of the house drinking gin and smoking something with a horrid taste and the oddest effects. The day was hot and hazy. Above us a coin-coloured sun was stuck in the middle of a white sky. I was watching a cloud of hummingbirds sipping at a honeysuckle bush beside the porch steps. Daphne, in shorts and halter and high-heeled sandals, stood up, a little unsteadily, blinking, and wandered into the house. I followed her. I was not thinking of anything – I was fetching more ice, something like that. After the glare outside I could hardly see indoors, everywhere I turned the air had a huge dark hole in it. Idly I looked about for Daphne, following the sound of the ice tinkling in her glass, from the kitchen through the living-room to the bedroom. The blind was drawn. She was sitting on the side of the bed, gazing before her in the amber half-light. My head suddenly began to ache. She drained her drink in one long gulp, and was still holding the glass when we lay down together, and a bead of ice slid out of it and dropped into the hollow of my shoulder. Her lips were chill and wet. She began to say something, and laughed softly into my mouth. Our clothes seemed tight as bandages, I clawed at them, snorting. Then abruptly we were naked. There was a startled pause. Somewhere nearby children were playing. Daphne laid her hand on my hip. Her eyes were closed, and she was smiling with her eyebrows raised, as if she were listening to a distant, dreamy, and slightly funny melody. I heard a sound, and looked over my shoulder. Anna was standing in the doorway. I had a glimpse of myself as she would see me, my glimmering flanks and pale backside, my fish-mouth agape. She hesitated a moment, and then walked to the bed with her eyes on the ground, as if deep in thought, and sat down beside us and began to undress. Daphne and I lay quietly in each other's arms and watched her. She pulled her blouse over her head, and surfaced like a swimmer, tossing her hair. A metal clasp left its mauve imprint in the centre of her back. Why did she seem to me so much older now than us, world-weary, a little used, an adult joining tolerantly in a children's not quite permissible game? Daphne hardly breathed, her fingers steadily tightening on my hip. Her lips were parted, and she frowned a little, gazing at Anna's bared flesh, lost in a sort of vague amazement. I could feel her heartbeat, and my own. We might have been attending at a ritual disrobing.

A ritual, yes, that's how it was. We strove together slowly on the bed, the three of us, as if engaged in an archaic ceremonial of toil and worship, miming the fashioning and raising of something, a shrine, say, or a domed temple. How grave we were, how pensive, with what attentiveness we handled each other's flesh. No one spoke a word. The women had begun by exchanging a chaste kiss. They smiled, a little bashfully. My hands were trembling. I had felt this choking sense of transgression once before, long ago, when as a child I tussled with two girl cousins in the dark on the stairs one winter evening at Coolgrange – the same dread and incredulity, the same voluptuous, aching, infantile glee. Dreamily we delved and nuzzled, shivering, sighing. Now and then one of us would clutch at the other two with a child's impatient, greedy fervour and cry out softly, tinily, as if in pain or helpless sorrow. It seemed to me at times that there were not two women but one, a strange, remote creature, many-armed, absorbed behind an enamelled mask in something I could not begin to know. At the end, the final spasm gathering itself inside me, I raised myself up on trembling arms, with Daphne's heels pressed in the small of my back, and looked down at the two of them gnawing at each other with tender avidity, mouth on open mouth, and for a second, as the blood welled up in my eyes, I saw their heads merge, the fair one and the dark, the tawny and the panther-sleek. At once the shudder started in my groin, and I fell upon them, exultant and afraid.

But afterwards it was Daphne alone who lay in my arms, still holding me inside her, while Anna got up and walked to the window, and lifted the canvas blind at the side with one finger and stood gazing out into the hazy glare of afternoon. The children were still at play. There's a school, Anna murmured, up the hill. She laughed quietly and said, But what do I know, I ask you? It was one of the mad widow's catchphrases. Suddenly everything was sad and grey and waste. Daphne put her face against my shoulder and began to weep silently. I will always remember those children's voices.

It was a strange encounter, never to be repeated. I brood on it now, not for the obvious reasons, but because it puzzles me. The act itself, the troilism, was not so remarkable: in those days everyone was doing that sort of thing. No, what struck me then, and strikes me still, is the curious passiveness of my role in that afternoon's doings. I was the man among the three of us, yet I felt that it was I who was being softly, irresistibly penetrated. The wise will say that I was only the link along which the two of them had negotiated their way, hand over hand, into each other's arms. It may be true, but it is not of much significance, and certainly not the central thing. I could not rid myself of the feeling that a rite was being performed, in which Anna Behrens was the priestess and Daphne the sacrificial offering, while I was a mere prop. They wielded me like a stone phallus, bowing and writhing about me, with incantatory sighs. They were -

They were saying goodbye. Of course. It's just occurred to me. They were not finding each other, but parting. Hence the sadness and the sense of waste, hence Daphne's bitter tears. It was nothing to do with me, at all.

Well well. That's the advantage of jail, one has the time and leisure really to get to the heart of things.

The illusion of their melting into each other which I had experienced at the end of our bout on the bed that day was to last for a long time. Even yet when I think of them together it is a kind of double-headed coin that I see, on which are stamped their twin profiles, serene, emblematic, looking away, a stylised representation of paired virtues – Calm and Fortitude, let's say, or, better still, Silence and Sacrifice. I am remembering a certain moment, when Anna lifted her bruised, glistening mouth from between Daphne's legs and, glancing back at me with a complicitous, wry little smile, leaned aside so that I might see the sprawled girl's lap lying open there, intricate and innocent as a halved fruit. Everything was present, I see now, in that brief passage of renunciation and discovery. A whole future began just there.