Finn is looking at a picture that Puck can't see, but he can see the look in his friend's eyes.
Finn feels his stare. "If you have something to say, just say it, dude. We're past tiptoeing around each other."
Puck slams his locker shut. "Unrequited love is a waste of time. Just walk it off." He stands there for a moment, looking at Finn. "There. I said it." He turns and heads out of the locker room.
Finn stays motionless, then rips the photo of Kurt in two and lets the halves flutter to the floor.