"I Wanna Be Yours" by Arctic Monkeys is a love song that expresses the singer's deep desire to be an integral part of his lover's life. The lyrics use various metaphors to illustrate this, such as being a vacuum cleaner or a Ford Cortina, symbolizing his wish to be useful and dependable. The repeated phrase "I wanna be yours" emphasizes his longing for commitment and dedication. The line "Secrets I have held in my heart are harder to hide than I thought" suggests that he has been concealing his feelings but finds it difficult to continue doing so. Overall, the song conveys a heartfelt confession of love and devotion.