It’s about kyle talking about a girl who basically used him and how he went through all the pain, it first shows him saying how he treated her and how he loved her, but then at the end he started finally noticing that the girl never loved him :(, but he was better and didn’t let that affect him as he says “You had me from the start, but you didn’t rip my heart.” the rest of the song shows him talking about how the girl treated and made him feel like shit.