City of Bones
How we cite our quotes:
"Jealous, Graymark? Perhaps you no longer feel about her the way you used to." (8.164)
We're not sure if Luke grew out of the jealousy of his youth or not, and we never really find out because he kind of bottles that stuff up. What can we say? Luke's not a sharer.
Clary, who a moment ago would have been meanly pleased, felt a rush of anger toward Jace. (9.82)
Clary is torn between being jealous of Simon and Isabelle and defending Simon from Jace's snide comments. It's kind of an awkward spot.
Stifling a murderous rage, [Clary] refused on grounds of exhaustion. (11.91)
Clary's jealousy of Simon and Isabelle might just drive her... to murder! Okay, okay, so we're being a bit dramatic. But notice how Clary bottles up her jealousy and blames it on fatigue. She's afraid to share how she really feels—even with her best friend.