My LonelyEyes headcanon:
Elias Knows every time Jon reads one of the “Dear Jonah I’m breaking up with you because you’re evil” letters.
And every time Elias Knows, every time he’s forced to remember how Forsaken he is, Peter Lukas feels Jonah’s aching loneliness, the loneliness that Jonah refuses to acknowledge, the loneliness that he can only indulge with Peter.