I’m not going to pretend I was calm. I sat on the office floor. Just sat right down on the carpet like my legs gave out. The thing that kept hitting me wasn’t even the affair.

It was the school forms. You don’t enroll two kids in school by accident. You don’t sign your name as their dad by accident. He’d been somebody’s whole daddy two hours down the road while he was texting me heart emojis for picking up his prescriptions. Every other weekend for years. And I’d waved him off at the door and told him to drive safe.

There was one detail snagging at me the whole time, and I couldn’t figure out why. Diane. Brian had a sister in Knoxville named Diane. He went to “help Diane” all the time. She was sick, he said. Bad divorce, he said. He sent her money and I never complained because that’s what family does. I’d never met her. Fourteen years and I’d never met his own sister, and I’d let that slide because he said she was a private person and didn’t do holidays. I sat there on the floor and the back of my neck went cold, because I was starting to do the math.

I found the insurance paperwork in a folder on his desktop, and there it was, the Knoxville address and a phone number typed right at the top. I should’ve waited. I should’ve called a lawyer first, my sister, anybody. I didn’t. I picked up my phone and I dialed it before I could talk myself out of it. It rang twice. A woman answered, bright and easy, like a person who has no idea. “Carter residence.”

My mouth went dry. “How long have you been married to Brian?” I said.

There was a little pause. “Nine years,” she said. “Who is this?” I closed my eyes. Nine years. We’d been married fourteen. He’d married her five years into our marriage, while I was home thinking we were solid, planning his surprise fortieth.

“Fourteen years,” I said. “I’m his wife. The real one. The first one.” I heard her breathing change. She didn’t yell. She just got very, very quiet, and that was so much worse than screaming. “That’s not possible,” she said. “Brian’s not married. He told me about you.” My stomach turned over. “He told you about me?”