It was not quite an announcement that Curufin and Celegorm were no longer welcome; Celebrimbor had no difficulty deducing it from the atmosphere alone, and had quietly removed himself from the scene as soon as he understood the implications. A pounding heart accompanied him down the long corridors of Nargothrond--he'd known that if his guess was correct, his life was due to change rather drastically within the next few hours, though the decision he had in truth come by weeks ago.
Curufin could not stay. Celebrimbor would not go.
Anger had fuelled his movements as he gathered together those of his father's possessions that lingered about his rooms. There were books, a few crafting tools, and a few articles of clothing that he had borrowed and neglected to return. In part it was because he knew his father would begrudge nothing to a loyal son, but in part it was a show of rebellion, a sly under-cutting on his part.
Finrod and Lúthien were innocents. Somehow it had become a mantra, repeated over and over in the young elf's mind until he was certain of his conviction. The matter had made him uneasy, churning his stomach and clouding his mind. What had happened to sympathy? To loyalty? Doubtless Celebrimbor was not a good man by any stretch of the imagination, but he was reluctant to ally himself with the kind of cruelty that dictated harming innocents, and robbing good men of support in anticipation of a crime that realistically would not be committed.
Trouble was brewing, Celebrimbor knew. Trouble here in Nargothrond, but there was no way this ended well. Too many seeds of resentment had been sown already, and whatever their end, it seemed a very unlikely chance that it would be anything good.
The knock at his door still made him jump, even though he had known it was coming--but for strength, he looked around at his room, largely unchanged except for his father's items gathered neatly together next to the door. Celebrimbor's own books remained at his desk and his bed, his clothes folded into the wardrobe, his jewels draped over many an available surface. It was not the look of a room about to be abandoned, and he intended to keep it that way.
"It is open, atar," he called out, surprised at how his voice did not even shake. Come and say goodbye, and if you choose your words carefully, I might keep some respect for you.