The red digital clock on the nightstand glowed 10:42 when Brenda rolled over and asked me how I still had the breath in me after two hundred feet of rock and damp air.

We had just gone through the usual routine. The front door had barely clicked shut before her arms were around my neck, pulling me down the hall so fast my duffel bag dropped right against the baseboard heater.

She was smiling that bright, wide smile that neighbors always talked about at the VFW fish fries. They used to tell me how lucky I was to have a woman who missed me so hard she couldn’t even wait for me to wash the coal grit off my neck.

I sat there on the edge of the mattress, my chest heaving, wiping a streak of black grease off my forehead with the back of my thumb. My knees felt like they were full of broken glass from crouching in shaft four all week. Brenda propped herself up on one elbow, her hair falling across her shoulder, and gave me that look she always used when she wanted to hear something pretty.

“Darling,” she said, her voice dropping down low into that sweet register she used when she wanted to catch me off guard. “After spending all day working in a coal mine, how on earth do you still have this much energy when you come home?”

I looked at her face. Really looked at it. Not the smile, but the way her eyes narrowed just a fraction, waiting to weigh whatever answer I gave her on the invisible scale she kept in her head.

I didn’t smile back. I just looked down at my calloused hands, still gray at the knuckles no matter how much pumice soap I used at the shift-change sink.

“They were tests,” I said. My voice sounded flat in the quiet bedroom, stripped of all the extra warmth I had forced into it every single time I walked through that front door for the last twenty years.

Brenda froze, her elbow slipping an inch on the floral comforter. “What did you say?”

“Tests,” I told her, my voice not shaking at all. “Proofs. Measurements. If you gave too little, you were selfish. If you gave too much, you were showing off. And if you gave exactly what someone wanted, they found a way to make you regret knowing them that well.”

The room got very still. The kind of still where you can hear the pilot light clicking in the furnace down in the basement.

Three years into our marriage, back when the shifts down in shaft two were twelve hours of straight swinging a pickax in water up to my shins, I came home on a Tuesday in November. I was so bone-tired my teeth ached. I walked through the door, dropped my bag by the coat rack, and sank straight down into the green armchair by the radiator just to close my eyes for ten minutes before I faced the kitchen.

Brenda hadn’t even come out of the hallway. When she finally stepped into the living room, her face was pinched tight as a dry boot.

“You didn’t even hug me,” she whispered, her voice shaking with that thin, reedy edge that meant a storm was coming.

“Brenda, I can barely stand up,” I told her, rubbing my palms over my face. “The roof in three-south dropped four inches today. We had to shore up the timbers by hand.”

She didn’t care about the timbers. She didn’t care that my lungs felt like they were full of dry soot. She turned on her heel and didn’t speak to me for three days straight. Not a single word over breakfast. Not a nod when I handed her the grocery money. When I tried to talk to her on Thursday night, she looked right past my shoulder at the wall.

“If you loved me, you’d find the strength the second you crossed that threshold,” she said while she washed the same dinner plate three times over. “Instead you just sit there like a stranger.”

That was the first time I learned the math of her affection.

Two years after that, I figured I would try it the other way. I picked up an extra double shift on a Friday, broke my back swinging a pneumatic drill until my wrists swelled up like turnips, and used the overtime cash to buy her a gold-plated charm bracelet from the jeweler down on Main Street. I walked through the door carrying the little blue box behind my back, grinning like a fool because I thought money and presents would prove how much I missed her while I was down in the dark.

She took the box, opened it, and her smile went as cold as winter iron.

“What is this?” she asked, turning the bracelet over in her palm like it was something she scraped off the bottom of her shoe.

“It’s for our anniversary,” I said, wiping the sweat off my neck. “I worked the extra weekend so I could get it for you.”

She set it down on the kitchen table and crossed her arms over her chest. “You’re hiding something. Men don’t buy expensive things unless they’ve got a guilty conscience about what they were doing while they were away from home. Who are you trying to pay off, Lyle?”

I stood there in my dirty work clothes, holding a sack of cold groceries, realizing that if I gave too much, she turned it into a weapon against my character. Generosity wasn’t love to her; it was evidence of a crime she hadn’t caught me committing yet.

So I stopped guessing. I started studying.

By the time we hit our tenth year, I had the homecoming down to a science. I would pull my truck into the driveway, kill the engine, sit there for five minutes in the dark cab, and force my breathing to steady out. I would rub my face until the tired gray lines smoothed out, paste on a wide, eager grin, and burst through the front door like a man who hadn’t seen the sun in a month. I would sweep her up, spin her around the linoleum, and drag her down the hall before she had a chance to look at my eyes close enough to see the exhaustion hiding behind them.

If I gave her the exact performance she wanted, she smiled all evening. But the moment I let my guard down, the moment I sat down too heavy or sighed too deep, the tests started all over again.

Sitting there on the edge of the bed tonight, watching Brenda stare at me with her mouth half-open, I realized the game was over because I simply didn’t have another performance left in me.

“You’re out of your mind,” she whispered, her voice finally breaking through the heavy air of the room. “I loved you. I was excited when you came home. Every single time.”

“You loved the feeling of being missed,” I said, my voice quiet and steady. “You loved the way my rushing through the door made you feel important. But you never cared what it cost me to keep up your standard.”

“That’s a lie,” she snapped, her hands balling up into tight fists against the quilt. “You’re just cold. You’ve always been cold, down in those dark holes. You bring the dirt right back up here with you.”

“Maybe I do,” I said.

I didn’t yell. I didn’t raise my voice to match her rising panic. I just stood up off the mattress, my knees popping loud in the quiet room. Brenda sat up straighter, her eyes flashing with that old familiar anger, waiting for me to back down, waiting for me to offer up some weak apology and pull her into a fake embrace just to keep the peace.

“Where are you going?” she asked, her voice hitching as I walked over to the closet. “Lyle, don’t you dare walk out of this bedroom.”

I didn’t answer her. I reached into the back of the closet, pulled down my heavy canvas work jacket that still smelled of diesel and damp shale, and slid my arms into the sleeves. I picked up my heavy-soled work boots from where I had left them by the door earlier that evening, carrying them by the laces so I wouldn’t wake the hallway floorboards.

“Lyle! Stop it right now!” she called out, her voice sharpening into a demand. “Turn around and look at me!”

I stopped with my hand on the doorknob. I looked back at her one last time, sitting there amidst the ruffled pillows and the dim yellow light, looking for all the world like a woman who had just realized her favorite mirror was cracked down the middle.

“I’m done taking the test, Brenda,” I said softly.

I pulled the door open, stepped out into the dark hallway, and let it click shut behind me.

I walked down the stairs, past the framed photographs of our wedding day where we both looked like strangers playing dress-up, and headed straight for the front door. I didn’t go back to the bedroom. I didn’t offer another smile.

Out on the front porch, the night air was cold and sharp against my face, smelling of pine needles and damp earth instead of stale coal dust. I sat down on the top wooden step in my heavy flannel, resting my forearms on my knees, and breathed in deep, filling my chest all the way down without a single person waiting to measure how much air I took in.