I had been married to my husband for almost three years, and somehow, I had still never been to the house where he grew up.

I sat in the driver's seat for eleven minutes.

I know because I watched the clock.

The kids had gone quiet in the back.

They were old enough to sense something was wrong and young enough to pretend they hadn't.

My daughter had her headphones in.

My son was staring out the window at the house with an expression that was too careful for a nine-year-old.

"Is everything okay, Mom?" he asked.

"Everything's fine," I said.

"We're just going to head home."

Daniel got into the passenger seat two minutes later.

He smelled like the porch — warm wood and cut grass — and he buckled his seat belt without looking at me.

I started the car.

We drove for six minutes before he spoke.

"I know you're angry."

"I'm not angry," I said.

"I'm trying to understand what just happened."

"What happened is that you saw something I wasn't ready for you to see."

"That's not what happened." I kept my eyes on the road.

"What happened is that your father has been carrying on with another woman for eleven years, your mother doesn't know the full truth, you've known for two years, and you gave that woman my phone number."

He was quiet.

"Why does Carol have my number, Daniel?"

"She asked for it.

A few months ago.

She said she wanted to be able to reach me if something came up with Dad and I wasn't answering."

"And you gave her mine instead."

"I gave her both."

I pulled onto the highway.

The kids had their headphones in now, both of them, which meant they had decided together not to listen.

I was grateful and heartbroken at the same time.

"What did she text you?" Daniel asked.

"She asked me not to tell your mother."

He exhaled.

"She's right."

"Is she."

"Ruth is sixty-seven years old.

She has a heart condition.

She has built her entire life around that marriage." He turned toward me.

"What would telling her accomplish?"

"It would give her the truth about her own life."

"It would destroy her."

"That," I said carefully, "is not your decision to make.

Or Carol's.

Or yours."

"I'm her son."

"And I'm your wife." I glanced at him.

"Which apparently comes with a lot of information I wasn't given."

He looked out the window.

"I was protecting everyone."

"You were protecting your father."

He didn't deny it.

We drove in silence for a while.

The highway opened up and the houses thinned out and the sky went wide and pale above us, and I thought about Ruth.

I thought about her voice on Sunday mornings, that particular warmth she had when she picked up the phone, the way she always asked about the children first before she asked about anything else.

I thought about her driving to her sister's every few weeks, cheerful and unhurried, while her husband settled Carol into the armchair in the living room.

I thought about how a person could love a life that had been quietly arranged around a lie.

"I need to ask you something," I said.

"And I need you to answer me honestly."

"Okay."

"Is there anything else?

Anything about your family — about your father, your mother, anything — that you know and I don't?"

He was quiet for four seconds too long.

"Daniel."

"There's one more thing," he said.

My hands tightened on the wheel.

"Carol has a son," he said.

"He's twenty-eight."