She follows his laugh, which follows her silence, which follows his leaving.
Not actual leaving. He comes back. But the leaving has a shape that the coming back doesn't quite fill, like a glass returned to a table ring that's already dried — the match is close but the condensation that made the ring is gone, and what remains is the mark of an earlier fit.
He leaves for Pittsburgh on Tuesdays. She calls on Wednesdays, after his first meeting, because she's learned the rhythm of when he's most willing to describe what he sees out the hotel window, which is her favourite kind of conversation — him translating a view she can't share into sentences she can hold. The parking garage with the one tree growing from its top level. The bridge that's a different colour depending on the weather, which he reports like data and she hears like mood.
She follows his laugh. His laugh follows her silence. Her silence follows his leaving. His leaving follows her refusal to say stay, which follows his refusal to ask whether he should, which follows her laugh, which follows his silence, which follows her —
They've been doing this for three years.
Not the travel. The circulation. Each one moving toward the sine of the next, which is already moving toward the sine of the next, and none of them arrive because the function that draws them is the function that moves the target. She reaches for where he was when he was reaching for where she was.
She knows this. Has known it. Knowledge doesn't help. You can map the attractor completely and you're still on it. The map IS the attractor; the mapping is the orbit.
Her therapist says: "What would happen if you told him directly?"
She thinks: the attractor would collapse. The damping would win. The trajectory would spiral to a fixed point — either together or apart — and the fixed point would be knowable and arrived at and final, and she's not sure she wants arrival more than she wants the specific shape of this not-arriving, which at least has motion, at least has the gold warmth of the inner loops where they're close, the blue transit of the outer arcs where they're not.
She says: "I don't know."
Which is the damping parameter. The small loss, each cycle, that keeps the whole thing bounded. Enough honesty to prevent escape. Not enough to permit landing. The structure exists because energy is lost.
He calls from Pittsburgh. It's Wednesday. She picks up on the second ring — not the first (eager) and not the third (indifferent). The second ring is the one that says: I was doing something, but I stopped.
"The tree's still there," he says.
"On the parking garage?"
"Yeah. I think it grew."
"You've been saying that for a year."
"Trees grow."
"Not in parking garages."
"This one does."
She leans against the counter. The phone is warm against her ear. Outside her own window: the neighbour's cat on the fence, performing its nightly assessment of whether the bird feeder is worth the effort. It never is. The cat returns every evening anyway.
"What colour is the bridge?"
"Grey today. Sad grey, not elegant grey."
"There's a difference?"
"Sad grey has a green in it. Like it's trying to be another colour and failing."
She closes her eyes. This is it — this is the inner loop, the gold part, the place where the orbit slows and the distance is smallest and the conversation has the specific warmth of two people who know exactly where they are and won't say it. The sine of him, which she follows. The sine of her, which he's already following. The three-body problem with only two bodies and the third body is the space between their saying and their meaning.
"I should go," he says, which is what he says before he doesn't go, before he stays on the line for another twenty minutes describing the colour of bridges in emotional weather.
"OK," she says, which is what she says before she doesn't hang up, before she settles deeper against the counter and lets the conversation spiral inward one more time, tracing the same attractor, the same gold inner loops, the same blue transits, the same.
The structure exists because energy is lost. She knows this.
She stays on the line.