His fingers tangled in his hair, just tight enough to get his attention. "I am always certain, Sam." Even now, as a powerless human, Lucifer had lost none of his confidence, none of his certainty. He would yield for no one - except for Sam.

"Are you?" Because Sam pulling away, regretting what they were about to do the next day - Lucifer would call a halt to everything if Sam hesitated. Sex would be wonderful to explore, but not at the expense of what they've built so far.