Jace is your typical cool boy with an ice cold demeanor but a secretly kind heart that’s still wounded by past grievances. He’s scarred by his past but doesn’t want to talk about. He’s the dark brooding type that you want to help but also know you should probably stay away from because he’ll probably break your heart. And he’s hot.
What makes Jace stand out from the rest, however, is his quick wit. He has the one liners to end all one liners. He’s funny and brutally honest in a way that makes you know you can trust him. My favorite description of Jace is only ask him a question if you’re ready to hear an honest answer.
Jace’s best quality, although it could also be seen as a flaw, is his fear of love. He believes it’s bad to be loved or to be in love, which is understandable considering who his father is. This fact makes Jace scared to give into his feelings for Clary, the protagonist of The Mortal Instruments novels, while also confusing him and making him into an adorable character you just want to help.
All in all, Jace is a keeper. As long as he’s not your long lost brother, of course.
“Have you fallen in love with the wrong person yet?’
Jace said, “Unfortunately, Lady of the Haven, my one true love remains myself.”
…”At least,” she said, “you don’t have to worry about rejection, Jace Wayland.”
“Not necessarily. I turn myself down occasionally, just to keep it interesting.” – City of Bones
Zakiya N. Jamal 
Yes!!! Jace is AMAZING!
Isn’t he? Have you finished the series? I just read the first book.