Tell them.

"She was drinking cold coffee, rereading her notes. I'd had the card in my wallet for two weeks, all crumpled up. I placed it there, without saying anything. She looked up. No answer that night. But two days later, she sent me a message."

"I'd slipped it under his glass as I was leaving. I'm not even sure he saw it that night. Three days of silence. Then a message at 11pm: "was that you?""

"We'd been passing each other every morning for months. I didn't even know his name. I handed him the card on the way out of the station. He smiled. His name is Maël. We take the same train ever since."

"I'd ordered the cards « just to see ». No clear intention. Then there was that evening, that rain, and him waiting under the same awning. I still don't know what came over me. He lives ten minutes away."