" As Luke knelt down beside his corpse, Clary couldn’t help but remember what he had said about having loved Valentine once, about having been his closest friend. Luke, she thought with a pang. Surely he couldn’t be sad — or even grieved?
But then again, perhaps everyone should have someone to grieve for them, and there was no one else to grieve for Valentine. "

― Cassandra Clare , City of Glass (The Mortal Instruments, #3)