The first time, she handed me a coffee and said nothing.
Midpoint Station sits at 35,786 kilometers — geostationary, the pivot between up and down. My car docks at 14:07. Hers departs at 14:14. Seven minutes of shared platform while the counterweight system cycles, her car filling with ballast as mine sheds it. I go up. She comes down. We've been doing this for five months.
Her name is Sera. She works atmosphere reclamation on the surface relay — twelve days on, two off, commuting the long way because the shuttle lottery hates her same as it hates everyone. I work structural integrity on the orbital anchor, same rotation, opposite direction. We are, in the most literal sense, passing through each other's lives.
The coffee was black, in a maglock cup with a dent on the rim. She'd written *Tuesday* on the sleeve in blue pen. It was Wednesday.
"You're off by a day," I said.
"Keeps you paying attention."
---
By week three, we had a system. She'd arrive with two cups. I'd arrive with whatever I'd been reading — actual paper, because the elevator kills your tablet signal for forty minutes on either side of the station and I'd rather have pages than dead glass. She'd read over my shoulder without asking. I pretended not to notice.
By week six, we knew things. She bites her thumbnail when she's thinking. I tap my ring finger on hard surfaces — a habit from years of percussive testing, running my knuckles along hull plates to feel for stress fractures. She's from Recife, originally. I'm from Busan. Neither of those cities has the same coastline they had when we were born.
We have never spoken about this outside the platform. No messages — the relay doesn't support personal traffic, and neither of us has suggested workarounds. What happens at midpoint stays at midpoint, not by agreement but by architecture.
---
Yesterday she was already on the platform when my car docked. That never happens — her schedule has her arriving ninety seconds after me. She was sitting on the ballast housing with her knees pulled up, her hardhat off, her hair still pressed flat from the seal.
"You're early," I said.
"I traded shifts."
"To be here ninety seconds sooner?"
She looked at me the way she looks at me — direct, unhurried, like the seven minutes are not a constraint but a choice. "To be here at all. They're restructuring the surface crew. I rotate to the southern relay next cycle. Different elevator."
Something cold settled behind my sternum. Not grief exactly. The specific vertigo of losing a fixed point.
"When?"
"Eleven days."
I sat down beside her. Our shoulders almost touched. Almost. The gap between us was the width of an atmosphere — which is to say, everything and nearly nothing.
"I don't even have your last name," I said.
"Vasconcellos."
"Sera Vasconcellos."
"Say it again."
I did. She closed her eyes. The counterweight system hummed through the housing beneath us, that low tidal pulse that means the cars are about to cycle.
"Four minutes left," she said.
I took her hand. Her fingers were cold from the platform air, calloused at the tips from reclamation tool grips. She squeezed once, hard, and didn't let go.
We sat like that until the departure chime. Then she stood, put her hardhat on, and walked to her car without looking back.
On the sleeve of my coffee cup she'd written a frequency — personal shortwave, the old analog band that nobody monitors anymore.
I have eleven days to figure out what to say on it.
