Magnus and Isabelle. However, the couple encounters trouble when they openly face the fact that Alec is mortal and is bound to age and die, whereas Magnus, who is immortal, will remain young forever. This, along with Magnus' extensive sexual history and constant unwillingness to share anything about himself with Alec, causes heavy complications in their relationship, since Alec begins to believe he is trivial to Magnus, while Magnus insists this is not the case, but refuses to explain himself or give proof. The two later break up during the epilogue of City of Lost Souls due to the fact that Alec had been visiting Camille Belcourt behind Magnus' back after Camille suggested to Alec that Magnus had sought the Book of the White to turn him mortal, and had offered to help Alec find the Book of the White in order to turn Magnus mortal. Alec briefly considers this but ultimately rejects it; however, Magnus does find this out and initially accepts Camille's "cover story" (that Alec wanted to un-immortalize him) as the truth. The two part with one final kiss before Magnus reluctantly walks away, leaving a heartbroken Alec behind. In The Infernal Devices we learn that Magnus has a thing for boys with dark hair and blue eyes, which matches Alec's physical appearance. In City of Heavenly Fire, Alec tries to apologize to Magnus and get back together with him but Magnus refuses to talk to him or answer his texts or calls. When all Shadowhunters are ordered to evacuate to Idris, Magnus goes to the institute to say goodbye to Alec and kisses him. Magnus makes it clear that he has forgiven Alec but cannot resume his relationship with him due to their vastly different personal circumstances. When Magnus is captured and sent to his father's hell-dimension, Edom, Alexander goes on a suicide mission to rescue him and miraculously succeeds, with help from his family and friends. The pair eventually get back together at the end of City of Heavenly Fire, with Alexander once again apologizing for his mistakes and Magnus promising to be more open with Alec about himself and their relationship. As of Lady Midnight, Magnus and Alec are engaged and have two sons—Max Lightwood-Bane, a blue-skinned warlock named for Alexander's deceased brother, Maxwell Lightwood, and Rafael Lightwood-Bane, an orphaned Argentinian Shadowhunter named for the vampire Raphael Santiago. Magnus has admitted that Alexander is