The song Heart Attack by Haley Smalls is about the painful experience of falling out of love and realizing that the person you thought you knew and loved has turned into someone else. The lyrics express the feeling of being betrayed, hurt, and alone, and struggling to come to terms with the truth. The narrator of the song describes how she wanted love but couldn't find it, and how the truth she discovered about her partner was heavy and deadly but also silent. She accuses her partner of having two faces like a Gemini and wasting her time, and says she has anxiety and feels like she's having a heart attack. The chorus of the song repeats the phrase "Heart attack" to emphasize the intensity of the pain and the emotional turmoil the narrator is going through. She says her heart is racing like she's running fast and that she can feel the cracks in her heart breaking and turning black. The verses also contain hints of suspicion and doubt, with the narrator saying her intuition is telling her that her partner did a bad thing and that she's seen them lie before. She also questions her own choices and how she could have missed the signs that their relationship was headed for disaster. In the end, the narrator realizes that she's had enough of running in circles and falling for someone who doesn't deserve her love. She says it's time to wake up and acknowledges that the part of her that loved is breaking. The song ends with a repetition of the phrase "Heart attack" and the suggestion that the narrator has been wounded and hurt by her partner's actions.