Well, there's the answer to both their questions, and a very effective distraction that totally destroys Kylo's ability to make comment on Murphy's attempts at magic. Is this the kind of conversation they should be having in the presence of their... adopted... son? Who, for whatever reason, happens to have Ronan's face, which leaves Kylo wondering just what else is and is not the same? Very, very probably not.
But Kylo can't quite control his immediate reaction as Ronan meets his gaze. There's a flash of fresh hunger in his eyes tempered with a certain wariness— because he'd thought he'd done an admirable job of keeping fantasies in that particular direction to himself. Unless...

He definitely shouldn't slide into Ronan's thoughts on the subject while they both have an audience, though. No.

"How generous of me," he comments lightly, even as his attention strays back to Ronan's bared skin. Just a whisper of invisible touch. "To put my treasured possession on display like this. You're going to cause a riot."