[국어사전]
외사랑 : 한쪽만 상대편을 사랑하는 일. 자신이 상대편을 사랑하고 있다는 것을 그 상대편이 알지 못하는 경우를 이른다.

[CREDIT]
Lyrics by 윤토벤
Composed by 윤토벤
Arranged by O.YEON , 박지환

Piano by O.YEON
Midi programing by O.YEON
Guitar by 최영훈

Executive Producer 윤토벤 (NE,VOT)
Executive Supervisor 손박사 (NE,VOT)
Production Planning & Marketing Director 김유단 (NE,VOT)
Administration Director 윤건준 (NE,VOT)
Video Contents 이재준 (NE,VOT), Kim Minwoo (Team Inspire99), Sung Sihyun (Team Inspire99), Park Eungyeol (Team Inspire99)
Management 이재준 (NE,VOT)
Mixed by 박지환 at Nevot Studio
Mastered by 권남우 at 821 Sound Mastering
Vocal Recorded by 윤토벤 at Nevot Studio
Digital Editing by 윤토벤 at Nevot Studio
Artwork by 이재준