"It was quite funny, in the greenhouse scene, there’s a line where he says something to Clary about, ‘You should have thought about that before you kissed me,’ and she says, ‘I kissed you?’ Meaning I started it? And he says, ‘Yeah, it wasn’t that memorable for me either,’ and walks off doing the Jace walk-off, which he did great. Then he’d say something off-screen to make Lily laugh! And she would try not to laugh, and it was unbelievably cute. Like, he’d walk off and say, [affecting a British accent], ‘Yeah, you were rubbish anyway.’ [Laughs]"