" I think everything that happened in Idris-Valentine, Max, Hodge, even Sebastian-I kept shoving it all down, trying to forget, but it's catching up with me. I... I'll get help. I'll get better. I promise."

"You promise."

"I swear on the Angel." He ducked his head down, kissed her cheek.

"The hell with that. I swear on us. "

― Cassandra Clare , City of Fallen Angels (The Mortal Instruments, #4)