New 'City of Heavenly Fire' Snippet!

Cassandra Clare just gave us a 'Clockwork Princess' snippet and now she's given us a 'City of Heavenly Fire' snippet! Today is a great day for shadowhunters!

“I think,” Jace said, “that you don’t want to tell your secrets, so you decided to break up with Alec because.." Jace schools Magnus, CoHF.

This snippet is for all of the Malec fans!! Is this the reason that Magnus broke up with Alec?