My best friend Ben married my little sister Rosie, who has Down syndrome, and for years I cried happy tears knowing she’d found the kind of protection the world had always refused her—until the night she went into emergency labor with twins at thirty-four weeks, and he dragged me into an empty hospital corridor, his face white as a sheet.

It was almost midnight when I got back.

The halls were quiet. The only sounds were the beep of monitors and the soft squeak of nurses’ shoes.

I walked to Rosie’s room.

The door was cracked open.

I pushed it open.

Rosie was awake.

She was propped up on pillows. The breathing tube was gone. She had a little oxygen tube under her nose. When she saw me, her face lit up like the sun.

“Lila,” she said. Her voice was hoarse, soft.

I walked to the bed. I sat down. I took her hand. It was warmer now.

“Hi, bug,” I said. I tried to smile. It felt like my face was made of broken glass.

“Where are the babies?” she said.

“Mia’s in the nursery,” I said. “She’s perfect. She has your eyes. Leo’s still getting a little stronger, but the doctors say he’s doing great. You can see them tomorrow, okay?”

Rosie nodded.

She squeezed my hand.

“Ben is sad,” she said.

I froze.

“What?”

“Ben,” she said. “He’s always sad. Even when he smiles. I see it.”

I didn’t know what to say.

“I know he doesn’t love me like a husband,” Rosie said. She said it so simply, like she was talking about the weather. “I know he loves you that way.”

My breath caught in my throat.

“Rosie—”

“It’s okay,” she said. She smiled. Her smile was so bright it hurt to look at. “I always knew. When we were little, you two would sit on the porch and talk for hours. You never even saw me there. I didn’t mind. I was just happy you were both my family. When Ben asked me to marry him, I knew. I knew he was doing it to be nice. But I said yes anyway. Because if I married him, he’d never leave. And you’d never leave. And I’d have both of you forever. That’s all I ever wanted. Both of you. And now the babies too.”

Tears ran down my face.

I couldn’t speak.

All this time, I’d thought we were protecting her.

We’d thought she was too innocent, too fragile, to know the truth.

But she’d known the biggest truth of all, all along.

She’d known Ben didn’t love her.

She’d married him anyway.

Just to keep us all close.

I leaned down and hugged her. I was careful not to touch her IV lines.

“I love you so much,” I whispered into her hair.

“I love you too, Lila,” she said. She patted my back. “Don’t be sad. We’re all here. We’re all okay.”

I held her for a long time.