Magnus looked startled and... like how Alec felt when Magnus said something flirty and charming and he couldn't quite process what was going on. It took Alec a few seconds to rewind their conversation and puzzle through what had confused Magnus. The comment about a gentleman? That had to be obvious when Magnus was always teasing him and trying to seduce him. Dancing? They'd already discussed that and Alec had said that he wanted to learn.

That left the comment about Magnus' eyes. "Your eyes. They're beautiful." They had been unnerving at first, proof that his roommate wasn't human, but once Alec got used to them, he hadn't been afraid. After that it wasn't difficult to notice how attractive Magnus' eyes were.

Hoping that he wasn't doing something foolish, he leaned in and brushed a quick kiss against Magnus' lips. "Sometimes when I look at them, I completely forget what I'm going to say."