Alastor physically could not do this anymore. His every waking moments were being consumed by thoughts of.. him. Granted, Lucifer had done him the favor of leaving him alone for a good while but even with his absence the king was all he could think about. It was driving him to madness, he was sure of it. How could Lucifer just- live with himself after what happened?
No snarky comments, no hurting him, he just walked away like it was nothing at all! Alastor paced around his room for a solid few minutes before deciding, screw it, and manifesting himself into the king's palace. "Lucifer! I know you're here, you better show yourself right now!" He shouted, immediately seeking him out like a madman.