Naomi was the first person I called when I found the second phone.

It was taped under the lip of Daniel's desk drawer, a cheap thing with one number saved in it, and I sat on the office floor with it buzzing in my palm like a trapped insect. I called Naomi before I even called my husband. That was how it had always been. Twenty-two years of friendship will do that to you. She came over within the hour, brought wine and tissues, sat on my kitchen tile with me until two in the morning while I shook apart.

"Whoever she is," Naomi said, smoothing my hair back, "she's not worth what you've built. You'll get through this. I've got you."

I believed her. Of course I believed her. She had been the maid of honor at my wedding. She had cried harder than I did when I lost my mother. When Daniel finally confessed there was someone else but refused to say who, it was Naomi who told me not to chase the name. "It'll only hurt you more," she said. "Focus on you."

So I did. For three months I focused on me, and Naomi was there for all of it. The lawyer appointments. The long drives where I screamed at the windshield. The night I drank too much and she held my phone hostage so I wouldn't text him. She was so steady that I started to wonder how I'd survive any of it without her.

Then she got pregnant.

She announced it the way you announce good weather, almost shy, one hand resting on a stomach that wasn't showing yet. I hugged her. I asked who the father was, and something flickered behind her eyes, a half-second hesitation I would replay a thousand times later. "Someone you don't know," she said. "It just sort of happened."

It hadn't just happened.

I found out from her sister, of all people, who assumed I already knew and let it slip at a baby shower I was helping plan. The father wasn't a stranger. The father was Daniel. The affair Naomi had counseled me through, the woman she told me not to chase, the name she said would only hurt me, had been her own all along.

But it was worse than an affair. Her sister, mortified, kept talking, and the whole shape of it came clear. Naomi had wanted him. Not loved, wanted, the way you want a thing someone else has. She'd stopped her birth control on purpose. She had told her sister, months earlier, that she was going to make sure she could never be cut out of my life. A baby was the rope she planned to tie around all of us. She wanted to be woven into my family so deeply that I could never fully be rid of her, even as she burned everything down.

She had sat on my kitchen floor and dried my tears with the same hands that built the trap.

I left the shower without saying goodbye. I don't remember the drive. What I remember is the strange, cold calm that came after the shaking stopped, the understanding that the worst betrayal of my life had never been my husband at all. It was the woman who taught me how to grieve him.