in the mortal instruments are clary and jace related
List of The Mortal Instruments characters At last, Magnus wakes Clary's mother Jocelyn, who informs Clary that Jace is not her brother. In fact, Sebastian (the real Jonathan Morgenstern) is her brother. It is soon revealed that Sebastian is a spy for Valentine and that he tried to seduce Clary into teaming up with him. Clary then tries to locate Jace to help him. She runs into Valentine, who ties her down in order to complete his summoning of the Angel by using her blood. Then, when Jace arrives to rescue her, Valentine forces her to watch as he fatally stabs Jace in the chest. Upon summoning the angel, Clary changes the marks on Valentine's summoning circle, giving her the ability to control the Angel, and after Valentine is slain, she wishes to have Jace back. After Jace is brought back to life, the two get together, now that they know that their love for each other isn't incestuous.
Is It Fall Yet? The film chronicles the characters' summer break between seasons four and five.
List of The Mortal Instruments characters For most of the books, Jace's sarcastic, cold remarks and behavior hide his tortured and angry soul. In City of Ashes, his strong "bad-boy" personality makes Maryse Lightwood (his adopted mother) somewhat scared of him, worried that he is too much like Valentine, who was believed to be his real father until the assumption was proven false in City of Glass. Jace and Clary fall in love in City of Bones, making Clary the only girl Jace has developed real genuine feelings for, but after they find out they are "siblings", each attempts to get over the other by dating other people. He is naturally overprotective and caring for her, although Clary does not see this due to her internal suffering. At the end of the third novel, City of Glass, Jocelyn contradicts Valentine's avowal that Jace and Clary are siblings, telling Clary that Jace is actually the son of Celine and Stephen Herondale. The truth frees Jace and Clary from the torture of having seemingly incestuous feelings for each other, allowing them to accept their mutual feelings and become a "real" couple.
List of The Mortal Instruments characters Clary Fray: Jace begins to fall in love with Clary in City of Bones, growing close to her. Isabelle and Alec later say that they noticed a change in Jace's behavior after he started getting close to Clary. In City of Glass, Isabelle tells Clary that before Jace met her, he was apathetic and only half-alive as if in a long-time sleep, but that after his first encounter with her, Jace "woke up" and "started living". Isabelle further claims that she has never seen him act the way he does with Clary and states that Jace will never get over her. Throughout the series, Jace continuously loves Clary even after he believes they are siblings, to the extent that he is willing to commit incest with her and have a secret relationship. He has been with a couple of girls (though it being stated as more as just hooking up) and tries to start a relationship with Aline Penhallow in a failed attempt to get over Clary. Clary and Jace reunite at the end of the third book after discovering they are not siblings.