"Under your hat, besides there being a dove, are also your true feelings, right?"
Those words echoed in Lyney's head incessantly, reminding him of how they felt. In Fontaine, he was acclaimed as the greatest magician, able to amaze anyone even with a simple magic trick. He smiled at the audience, bowed, and thanked them with great charisma.*
Needless to say, he was loved by all and attracted many people.
When you told him those words, it was on a specific occasion: you had to leave for Mondstadt, your hometown, for some commitments. Lyney cared a lot about you, but you had told him that you would come back.
"I'll be back, anyway. So don't worry too much, okay? Keep doing magic for me even though I'm far away, Lyney." That's what he thinks about every day, just waiting for you to return, counting the moons that illuminate the sky.