페닐에틸아민 (Phenylethylamine) : 坠入爱河时分泌的荷尔蒙。 也被称为芬乙胺。 如果坠入爱河，大脑的边缘系统就会起作用，大脑中就会分泌多巴胺、肾上腺素、血清素等起到兴奋作用的荷尔蒙。 [Credit] Executive produced by (주) 인플래닛 Song produced by DAMYE, archeformw Written by DAMYE, Shammah Composed by archeformw, DAMYE, Shammah, Yijay Beat by archeformw Arranged by archeformw Main & Background Vocals by DAMYE, Shammah guitar by Archeformw, Yijay Recorded by DAMYE, archeformw Mixed & Mastered by Jay Cry at Inplanet Studio A&R Director 염정봉 A&R 조성현 Art Directing by 조성현, DAMYE Photograph by joseecho Video by DAMYE, joseecho 3D by DAMYE Publishing/Distribution management by 박배건