Jem is quite obviously not dealing with Jace's denial of his Herondale name very well. Description from I searched for this on

The Infernal Devices Will's letter to Tessa: "I would have chosen death for a chance to tell you the truth, Tessa, if I could have been assured that death would be my own.

Jem's love for Tess is beautiful (from the Infernal Devices series by Cassandra Clare)