All things considered, Magnus should have expected the shadowhunters to turn up at his door demanding answers after Alec left with that girl – Saf. Her name was if Magnus remembered correctly. But considering that his boyfriend of a year had been lying to him about not only being a warlock but a shadowhunter too, and now he had left to who knows where with some conniving girl who Magnus didn't trust one bit. It wasn't Alec's departure which made him angry or the lies, from the little Alec said to his supposed sister and ex-parabatai it revealed how damaged Alec's past really been before ending up on the streets, he had seen the rune scar although he couldn't say he had particularly noticed it whenever he saw Alec shirtless but the other warlock is powerful enough Magnus could only assume he could hide it behind strong glamour after all Alec could hide his warlock mark by making it look like a tattoo on his back something that Magnus had never seen before. Maybe it was a unique ability only a hybrid had.
God, Magnus never expected such creatures to exist. He only ever believed that Tessa was the only shadowhunter/ warlock hybrid alive (and she only existed thanks to the Clockwork Angel Pendant), yet he was wrong: his own boyfriend was one. Magnus knew he had the right to be angry at Alec for lying, but at the same time, did he? Magnus never asked Alec for his circumstances behind why he kept his secret hidden all this time, from what Alec said the only person who knew he was a hybrid was Maryse and Robert Lightwood, that girl and well Alec. Had he just listened maybe Alec and Magnus could have figured it all out together but now that wasn't the case, Alec was gone and either Alec or someone else was blocking Magnus from being to track his boyfriend. But that also didn't matter because he had two angry and one confused shadowhunters to deal with.
"How do you know my brother?" Issy asked pushed her way into Magnus' apartment and stared at the warlock. She still couldn't get over the fact her brother was alive and now only after just finding him, she had lost him once more after he left with that girl. Magnus seemed to be the only connection to Alec's time away from the institute, so maybe he had the answers she and Jace so desperately searched for.
"I don't owe you any explanation, Shadowhunter!" Magnus glared. He might have helped them earlier with Clary's memories, but that didn't mean they could come swanning in whenever they felt like it and demand his help. This was one reason he hated shadowhunters they always thought that they were better than downworlders because they had angelic blood compared to the downworlders demonic blood… ah, that could be another reason Alec said nothing. Magnus had always been vocal about his hatred towards shadowhunters that Alec must have felt like he couldn't come forward in case Magnus decided to hate him for being part shadowhunter. Great, now Magnus hated himself just a little more because of that.
"Please Magnus, whoever they are, they took Simon. I just want to get my best friend back," Clary said, Magnus stayed quiet. He hated he had a soft spot for Ms. Fray, "If we can find where they took Simon then maybe we can also find this Alec person. Please Magnus, you're our only hope,".
"It's impossible to find Alexander, wherever he is, it's blocking me from tracking him, and I guess that would be the same for Simon as well," Magnus said.
"Yeah, we've tried shadowhunter tracking it didn't work," Jace said and Magnus snorted, shadowhunter tracking wasn't as powerful as warlock tracking, "How do you know Alec?".
"If you must know I met Alexander over a year ago when he was living on the streets as the high warlock of Brooklyn it's my duty to ensure all warlocks in Brooklyn are protected I offered my help but Alexander refused and kept avoiding me for about a month before he landed injured on my balcony after losing a battle with a Ravener Demon, he stayed in my apartment slowly healing and well never really left," Magnus said irritated, all he wanted was for these shadowhunters to leave him alone.
"But Alec's a shadowhunter, he was born a shadowhunter, he has or had runes and can use a seraph blade and stele. How can he be a warlock? How could that girl or that guy be a mix between a shadowhunter and a downworlder which is impossible" Jace said, he couldn't figure out what the hell was going on, his not so dead parabatai was in fact both a warlock and shadowhunter who had been living another life away from the New York Institute with the High Warlock of Brooklyn of all people?
"I don't know that girl mentioned an experiment so I can only assume that is your answer also from the little we overheard I can only assume something darker is at play now if you want to discover why Alexander is the way he is then I would suggest you speak with you own mother as Alexander suggested," Magnus said as he used his magic to open his front door, "Now if you so kindly leave my home,".
Issy nodded, she knew when they were no longer welcomed and she didn't want to risk the wrath of the High Warlock of Brooklyn after all, he might be their only help in finding Alec but first, she had some questions to put to her mother who luckily had returned from Idris hours ago. Magnus watched as Jace, Issy, and Clary left his home, using his magic to slam the door behind them before he swiped his collection of Chinese Vases onto the floor then he grabbed a table chair and threw it at his case of potion ingredients. Magnus didn't care what he destroyed, he just needed to let his anger out on something. It wasn't like he couldn't fix it with a flick of his wrist after. Magnus tore through his apartment destroying anything and everything he could get his hands on, the statue of Athena was smashed into tiny pieces of the floor, the Mona Lisa was now sporting a nice hole where her head used to be.
Soon enough, everything he could break was lying in pieces on his floor before Magnus finally let the events of today sink in. The argument, the fight, the discovery, and finally Alexander leaving.
"It's all my fault, if I hadn't accused Alexander of all those things then maybe we could have talked this out, we could have worked through it and he wouldn't have left with that girl, he would still be here. It's not his fault he's a hybrid. None of this is Alexander's fault," Magnus sank to his knees and cried.