Calum and Indigo have been best friends for years. Now Calum is getting ready to attend Indie's wedding, to Tatum, a guy he cannot stand. This is the story of how Calum wrote a song for Indie years ago. And how Indie came to realize it was about her years later. Now, she's facing their past mistakes and rethinking everything. Is she really in love with her fiancé, or was she just holding out for that one lost love? based on the song Heartbreak Girl by 5 Seconds of Summer. !! mature content/language cover credits to @loverofcalthAll Rights Reserved