It was hard not to keep smiling at Nunnally with the things she was saying, even with Sam around. Admittedly, Lelouch hadn't been trying very hard to begin with, if at all, but although his sister had effectively let the cat out of the bag as far as their exact relationship was concerned, it would only make matters worse if Sam picked up on how much that relationship meant to him. Lelouch may have had the threat of harming Dean again to fall back upon, but when it would be so much easier for Sam to hurt Nunnally, that couldn't mean much anymore. Sam simply knew too much.

"I've created a monster," he lamented, finally finishing with the chair. It seemed unlikely that anyone else would join their little group, but he felt better knowing it was in a more appropriate location anyway. From there, returning to Nunnally's side and taking his seat was a simple matter, even if he had to restrain himself from automatically taking her hand or something similar. Sam didn't need to see that.

Lelouch fell silent after that, watching the conversation in much the same way he'd observed Mihai and Nunnally earlier instead. She's always been the more open and friendly of the two, and much as he wished to intervene and at least take over the introductions, it would be a little too awkward to do so now. Besides, he was more interested in seeing if he could glean something of Sam's intentions from what verbal and nonverbal cues he could pick up.