The song "Proof" by Haley Joelle tells the story of a person who goes through heartbreak and is struggling to convince others of the truth of their feelings and experiences. The lyrics depict a scenario where the person's love interest abruptly leaves the country, leaving them feeling confused and abandoned. In the lyrics, the protagonist recalls a time when they celebrated a birthday with their friends, hoping that their love interest would join them. However, the person left before that could happen, creating a sense of disappointment and confusion. The protagonist questions why their love interest had expressed love for them before leaving. The protagonist finds it difficult to cope with the situation and is catching up with friends, trying to explain what happened. However, there were no witnesses or evidence of their relationship, which makes it challenging for the protagonist to persuade others that their feelings were genuine. They feel as though their heart was stolen, but they lack the proof to support their claims. Throughout the song, the protagonist reflects on the memories they shared with their love interest, such as drives home and family dinners. These moments were significant to the protagonist but might seem insignificant to others. They struggle with the fact that their love interest seems to have moved on with someone else while they are left alone, still cherishing the memories and feelings they had. The chorus of the song emphasizes the protagonist's frustration in trying to prove their love and the absence of evidence to support their claims. They feel as though their heart was stolen, but without tangible proof, they find it difficult to make others understand. Overall, "Proof" explores themes of heartbreak, longing, and the struggle to validate one's emotions and experiences to others. The song captures the emotional turmoil of a person trying to come to terms with a lost love and the challenge of convincing others of the truth of their feelings.