He lifts his head and shakes it quickly. That word sears into his heart. He can't be alone. Not ever. But no longer does he know if the fear is the one of Lan Wangji waking up alone in a foreign place, or his own at being left behind.

"He won't be alone. I won't let him be alone! I'll never let him go!"

Wei Wuxian's voice is raised, panic gripping it as he continues to shake his head. Even though a small part in the back of his brain, he knows that Lan Xichen is right and that there is no way they will let him go with him, he can't help how he feels.

"He'll know...he'll know I failed him..."