I felt like I was spiraling. I thought about all the other things I might have missed. I thought about the way he always made sure my favorite tea was stocked, even when he didn’t drink it.

I thought about how he always checked the tires before we went on a trip, even when I told him he was being paranoid. I had spent so much of my life thinking his actions were just quirks, just habits, just him being him. I never stopped to think that every single one of them was a message. I never stopped to think that he was building a whole life out of these little, quiet, secret promises.

I realized then that I hadn’t just lost a husband. I had lost a witness. I had lost the only person in the world who had been keeping track of all the little things I didn’t even know were happening. I felt so small. I felt so ungrateful.

I looked down at the index card again. I traced the letters with my thumb. His handwriting was so steady. He had been so sure of himself, even at twenty-two.

I finally turned the key. The engine coughed once, then roared to life. The heater started to push out a little bit of air. It wasn’t warm yet, but it was getting there. I didn’t move. I just listened to the engine hum.

I realized that I would never be able to thank him. I would never be able to tell him that I finally understood. I would never be able to tell him that he was the most thoughtful man I had ever known.

It was a hard realization to swallow. It cost me everything to finally see it, because now I had to live with the knowledge of what I had missed.

I had to live with the guilt of all those times I had taken it for granted, all those times I had complained about his love because I was too blind to see it for what it was.

It was a bitter kind of peace, I suppose. I sat there until the windshield cleared. I didn’t go to the doctor that day. I just drove home, the heater finally blowing warm air against my face, and I kept the index card in my pocket, right against my heart, where it would stay warm for the rest of my life.