The song "Begin Again" by Unknown Brain, Hoober & RIELL explores the complicated dynamics of a tumultuous relationship. It talks about the narrator's partner staying out late and the insecurity and jealousy that arise from it. The narrator confesses to making out with one of their partner's friends out of jealousy, but also admits feeling guilty when their partner walks in with someone else to make them jealous once again. The lyrics suggest that the couple engages in repetitive and immature "stupid little games," indicating a pattern of behavior in their relationship. Despite the ups and downs, the narrator expresses a desire to start over and give their relationship another chance. The song also highlights moments of passion and intensity in their relationship, as mentioned when they are lying face to face and playfully pulling each other's hair. The narrator acknowledges that their connection is like a collision, potentially destructive but also exhilarating and addictive. Overall, the song reflects the complexity and contradictions of a troubled relationship, with the hope for a fresh start and the longing for things to improve.