[his eyes widen slightly, stricken; not in hurt or distress at Wei Wuxian's response on his own behalf, just, still sympathy for the degree of feeling he's getting from Wei Wuxian about this.

in response he very deliberately and carefully but half unthinkingly repeats what has become his familiar fallback reaction for when either he or Wei Wuxian is overwhelmed and panicking and not sure what to do, which is:

- shift his hand around and very gently smush Wei Wuxian's face down onto his shoulder]