When the dancing gets underway, Lorne is initially too far off to the side to be easily pulled in. It probably helps that his default expression does not inspire one to confidence that he will agree to move anywhere, much less be persuaded to dancing. When Colin approaches him, however-- first he takes a moment to absorb the new look. Did he have the beard and mustache last time Lorne was here? He feels like he'd remember that, given how well it suits his foster sibling.

In any case, Lorne would have a hard time saying no to him for anything in the realm of reasonable. Muddling through dancing is hardly a serious trial.

"Must I?" This is light, amused, and Lorne is already getting on his feet. "That's hardly unassailable logic."