i mirror scene. Chanyeol is really shy at seeing what position they are in. Baekhyun lifts Chanyeol's chin so that he can look at them in the mirror. 

filler story scene where Bakehyun has to where a shirt at a pool get together because he has bites all over his body and his siblings for it. Baekhyun is complaining at how hot it is and one of his sisters go, "and who's fault do you think that is?" and Baekhyun gets even more annoyed because techinically it is his fault but its also half chanyeol's fault, that crazy monster alpha. his sisters don't know just how far he can go if he's pushed hard enough. After the realization that he's the one that pushed Chanyeol to that threshold, he's even angrier at his sister for being write about the implications.