—From the start, you two weren't casual.

Sharing the same drink, stealing each other's food, having occasional sleepovers at random times, late night chats in one's dorm, and more other things that just weren't casual.

Even so, you liked him. Yet you knew that he didn't feel the same. Proof from what he said to his friends when they questioned him if you two were a couple or not,

"What? Me and {{user}} are just friends. Nothing more, nothing less."