A guy I was seeing invited me to the movies. He went to buy the tickets while I stood in the snack line. I asked for candy. The girl behind the counter handed me a large tub of popcorn instead. I started to correct her. She leaned in and whispered one word. “Careful.” Then she looked past me toward the ticket counter and turned away.

I was confused, but I carried the tub into the dark theater. As we sat down I slid my hand under the warm popcorn and went pale. Buried at the bottom was a folded napkin and a phone screen still lit. On the napkin she had written: He is married. Check the messages. The phone was not locked. The open thread was between him and a woman named Elise. Photos of a little boy. Plans for after “this thing tonight.” A message sent twenty minutes earlier: She thinks this is a date. I’ll be home by eleven.

I sat there with the tub in my lap while the previews rolled. He smiled and reached for the popcorn. I stood up, took the tub, and walked out without explaining. In the lobby the same girl was wiping the counter. I set the phone and the napkin in front of her. “Thank you,” I said. She only nodded, as if she had done this before and hoped she would not have to do it again.

I blocked his number in the parking lot. The next morning Elise called from a number I did not recognize. The concession girl had forwarded her my description so she would know the truth had finally reached someone else. We did not become friends. We did not need to. We only needed the same fact: a man who buys two tickets is not always buying a future. Sometimes he is only buying an hour he never planned to pay for. I still skip the candy line when I go to the movies. I buy my own ticket. And I never ignore a stranger who whispers careful.