"What Am I to You?" is a song by Norah Jones. The lyrics are about the singer asking her lover what she means to him. The song describes the singers love for her partner and her desire to know if he feels the same way. The lyrics mention the sea as a metaphor for the depth of the singers love. The song also talks about the singers willingness to be there for her partner when he is feeling low and her fear of losing him. The lyrics are emotional and heartfelt, expressing the singers vulnerability and desire for a deeper connection with her partner.