For three years, the spare room belonged to the console. That was the joke between us. Daniel worked long days at the logistics firm, and his way of decompressing was to climb the stairs after dinner, close the door, and slip on a headset until midnight. I never minded. A man needs his hobby, my mother used to say, and I believed it. I had my paperbacks and my herbal tea downstairs; he had his friends from the internet upstairs. We were two adults who liked each other and gave each other room to breathe. I thought that was what a good marriage looked like.

The first wrong note was small enough to ignore. He started locking the door. Not always, but enough that I noticed the little click when I carried up his coffee. When I asked, he laughed and said one of the cats had wandered in once and walked across his keyboard during a match. It sounded reasonable. Everything he said always sounded reasonable, which is a thing I understand now that I didn't then.

Then the timing shifted. He stopped coming up the stairs after dinner and started disappearing during it, his fork still warm on the plate, murmuring that the guys were already online and waiting. He bought a second headset, a nicer one, and got cagey when I picked it up off the hall table. He laughed differently up there too. I would pass the door and hear it, low and warm, a laugh I hadn't heard pointed at me in a very long time.

The night it came apart was an ordinary Thursday. We'd decided on takeout because neither of us wanted to cook, and Daniel volunteered to drive to the pizza place across town, the good one, twenty minutes each way. He left in a hurry, keys jangling, and I went up to the spare room to fold the laundry I'd been avoiding. The console was still running, a slow blue glow pulsing on the screen. The headset sat on the desk where he'd dropped it.

I only meant to move it. I swear that was all. The wire was tangled in the laundry basket strap and I lifted it free, and somehow, without quite deciding to, I settled the cushioned cups over my ears the way I'd watched him do a hundred times.

I expected the usual chaos. Teenage boys shouting about respawns, the clatter of gunfire, the noise that had become the soundtrack of our evenings. Instead there was a soft hum, almost intimate, and then a woman's voice, easy and unhurried, as if she were lying in her own bed.

"I can't wait until you finally leave her," she said. "Last night was amazing."

I stood very still. The laundry basket was pressing against my hip and I remember being aware of that detail with strange clarity, the plastic edge, the warm clean smell of the towels. There was no game. There had never been a game on the other end of that wire. He had been using the party chat the way other people use a burner phone, a private channel that left no log on a bill I would ever see, no thread on a phone I might one day pick up. He had built himself an entire second life inside a hobby I had defended at dinner parties.

Last night. I tried to remember last night. He had come down close to one in the morning and slid into bed and pressed his cold feet against mine and said, you should have seen the match, we were unstoppable. I had half-woken and mumbled that I was glad. I had been glad. That was the part that hollowed me out, standing in that little room with a stranger's voice still warm in my ears. Not the betrayal alone, but how generously I had handed him the privacy to commit it. How proud I'd been of trusting him.

I took the headset off and set it back exactly where it had been, angled the same way, the wire looped the same. I went downstairs and folded nothing. When the headlights swung across the front window and he came in balancing the pizza box and a two-litre bottle, smiling, asking if I'd found something for us to watch, I said yes in a voice I didn't recognize as my own.

I let him eat. I let him talk. I watched him laugh at something on the television, this man I had given three years of unguarded faith, and I understood that the marriage I thought I was in had ended some time ago without anyone telling me. The door upstairs was still ajar. The blue light was still pulsing. And for the first time in years, I knew exactly what was behind it.