He smiled, and for once he couldn’t make it look genuine. Or maybe it looked just the way he wanted it to. "That’s my worry. Not yours." "Okay. Sorry. I get it." He waved a hand. "You’re young." The pizzas arrived in time for a subject change. "What are you studying, anyway?" He lifted a triangle of pizza and bit the point off. I took a second to get a perverse kick out of the fact that we’d met a number of times, had s*x twice, and this topic had never come up. "Psych. Specifically around substance abuse and addiction." He stopped chewing for a few seconds. When he could speak, he said, "Heavy. Any particular reason?" I finished my own mouthful of pizza, taking my time, before responding. "There are a few particular reasons." I lifted my mug, waiting to see if he’d ask what they were