Nathaniel doesn't realize it until Anders mentions. That's when the music stops, his breath hitches, and he wonders how long Anders has known. If he only just realized, how much Nathaniel would have preferred him to find out some other way. His eyes close briefly.

"Of course. I'm sorry." A moment of denial while Nathaniel pretends the humming alone was what Anders heard, not the song. But Anders' posture indicates otherwise. Nathaniel hesitates, then wraps his arms around him as tightly as he can.

"It's all right," he whispers. "I'll be fine. And so will you."