The song is a speakerโs expression of gratitude to a woman who has remained close to him through difficult times. At first, he reflects on how easy it is to enjoy life when young without thinking about the future. He then recognizes that she supported him even when he neglected her, and the repeated chorus turns that recognition into a warm declaration of love and friendship.
Calling her an โangelโ suggests that he sees her as unusually caring and almost heaven-sent; it is praise, not necessarily a literal claim. โHave your backโ means to support or protect someone, while โthrough my incarcerationโ points to her staying with him during a period when he was in prison. He also says she deserves to be treated like a queen, highlighting the gap between the care she gives and the attention she has received.
The song is affectionate, but it also carries a note of regret: the speaker admits his behavior was not always considerate and says she did not get the love she needed. His gratitude may be sincere, though the lyrics leave open whether his appreciation will lead to lasting change. The song celebrates her loyalty while quietly suggesting that devotion should be met with care in return.