"This is your best behaviour?" Kylo asks, amused— though it isn't much of a reprimand at all. It isn't even really a question that expects more of an answer than a playfully wicked smile flashed in his direction.

The truth is, Kylo loves having his self-control tested. He enjoys the tension, the weight of building anticipation... and, of course, the subsequent release.
A potential audience, however, is something they haven't really had before— and while he hasn't (yet) gone looking in Ronan's mind for evidence to confirm his suspicions, he can't help wondering if the invitation he's just extended is more of a genuine suggestion than a joke...