you're singing obnoxious, I'm laughing like spring (слэш)

“Hey,” Suowei says suddenly, narrowing his eyes. “You’re doing that thing. That face.”
“What face?” Xiaoshuai tries for lightness, but it comes out flat.
“The face you make when your brain is being sad and dramatic, instead of applauding my hard-earned sexual glory!”
“Sorry.” He mutters. “Just… thinking.”
 
or, Xiaoshuai is haunted by old scars. Suowei and Chengyu reassure him (in their own ways)