The lyrics of "Nothing's Gonna Hurt You Baby," originally by Cigarettes After Sex, are meant to convey that Ryan might be "one of the good ones," a man who will make Cassie smile with (albeit perverted) sweet nothings and who won't hurt her. However, just like the rest of the music in this movie, the track is working with an ironic lens – Ryan isn't too sweet after all, and he is using a sugary-sweet mask of his own.