[Alec isn't sure how Sebastian is going to react to what he needed to say. He hadn't even been sure what he was going to say until the words spilled out and he remembered Will and what others had said about the Herondales. Loving completely and at times selfishly. But it isn't selfish if Alec cared about those around him and what they wanted.

Which is why when he sees Sebastian starting to tear up, his heart clenches painfully. He'd said the wrong thing. Sebastian hadn't wanted to hear about Alec loving two people. Sebastian probably believed that it was wrong. That Alec should give up one to have the other. It didn't matter that not loving Magnus would break some important part of him. He'd hurt Sebastian with his honesty no matter his intention.]

"Sebastian, I'm sorry. I didn't mean to hurt you. I'd take it back but it's true and I can't change that."