He wouldn't have cared even if they weren't hidden. He had wanted to hear that he wasn't her brother since he found it out in the first place. He wanted to be with her, and gawking passersby wouldn't stop him from anything now.
He raised an eyebrow at her when she told him who his parents were. He had heard the name before, but it was probably just the family name he had heard about in his lessons about the uprising. Herondale. He certainly didn't feel like a Herondale, but Clary's next words actually made him smile, because she was right. He hugged her tight to him, kissing her hair, then letting his chin rest on the top of her head. "I guess you're right. I am pretty much one of the family."