Rema whom you've been sighing over. You saw him but you didn't go to meet her and show her the picture you took together. Let him say so I know this girl, let him just take you to be his wife or ...

Christopher Polk/Variety via Getty One of the most inescapable hit songs of the past year has been "Calm Down" by Rema and Selena Gomez — who've grown close as a result of the collaboration.