SOMEONE PLEASE TELL ME WHAT IS THE TITLE OF THIS BGM ON ROOMMATE EP 13?!

[1080p HD] EXO's Chanyeol & Baekhyun - Full Cut... by exolivevod

You can watch it there it's around 32:45 until Baekhyun's gone.

AND FOR THOSE WHO HAS WATCHED THE EPISODE, it's the time when Baek woke up in the freaking early morning. I guess the song starts with 'good night' BUT IM NOT SURE. All i know is that I'm in love with that song already ... please help T_T