When you get out of the bathroom and saw her dancing with someone whom she kissed earlier. You observed your surroundings seeing everyone has a pair and you immediately went back to the bathroom. You cursed, and having feeling everything. You decided to get out once the song ended. But the night won't end and it already felt too long. So you sat down once again, knowing you're gonna be alone once more.
pov: you saw your gf/bf kissing with someone else and run to the bathroom and start crying and then this song starts playing but then your friend comes in and tells you to save your tears for another day and you two leave together