If you've watched Sierra Burgess Is a Loser [1], then chances are you have the above song stuck in your head (and you're also swooning [2] over that perfect cast [3]). The simple, gorgeous track plays in the final few moments of the new Netflix rom-com [4] and is belted out by star Shannon Purser (yes, Barb from Stranger Things [5] can sing, y'all). The song "Sunflower" is written by Purser's character, the titular Sierra, after she royally f*cks up two of her closest relationships. It's catchy as hell, and we totally get why Veronica decides to forgive Sierra after tearfully playing it in her car. Listen to it for yourself as many times as you'd like (translation: a billion) by pressing play above!