"I wouldn't have done it if I was going to regret it."

Not quite true, but 'no' as a word or concept becomes almost unthinkable in the face of temptation. There are circumstances where he could regret it. If it hurt her, or if she expresses regret herself. The actual act, being with her? No. He's mixed up about that, but not regretful. As he sets his glass down, he meets her eyes, likewise not wanting to brook any doubt about enjoying the time together. Would he even be here, otherwise?

Drawing his own conclusions, though, would be a mistake. Never assume. God knows he's had that truth beaten into him by the job, and if he's slipped up enough there, he can learn from it now. Cameron, predictable Cameron, is off pattern right now. It's a new scenario. He has no idea where it's going to go.

"It was a little unexpected," he admits, the soft 'but enjoyable', present in his voice if not explicit in his words. "I don't know exactly what you want."

They slept together. Now she's still being coy over getting a drink?