From U-TUBE:If I'm Not In Love - Faith Hill NANAの挿入歌、 伊藤由奈が歌う”Endless Story"の元歌です。From U-TUBE. Country music artist Faith Hill performing "If I'm Not In Love" from her Breathe album CD version in HD (c) 1998. Song: "If I'm Not In Love" Artist: Faith Hill