"Lose My Number" by James Blunt is a song about unrequited love and the frustration that comes with it. The lyrics suggest that the narrator and the person they are interested in had some sort of connection or relationship before. However, there seems to be a lack of communication between them, as the narrator asks if the other person forgot to call or lost their number. This could indicate that the narrator is waiting for a call or message that never comes. The song expresses the narrator's jealousy and insecurity, as they mention seeing the person talking to someone else. The line "everybody knows I'm jealous" implies that the narrator's emotions are well-known by those around them. Despite the narrator's frustration and longing for a deeper connection, they understand that the other person may not be as invested in the relationship. The lyrics mention that the person they are interested in may not come easily and that reaching for the stars requires effort. The song also explores the feelings of being ghosted or ignored by someone the narrator thought had genuine interest in them. The line "I know I've just been ghosted, who knew you could be so callous?" reflects the disappointment and surprise the narrator feels upon realizing that the other person has seemingly disappeared from their life without explanation. Throughout the song, the narrator expresses their desire to find someone that they can love and have a meaningful relationship with. They seek reassurance that they are not being played, and they long for a genuine connection. Overall, "Lose My Number" portrays the frustration, longing, and insecurity that can arise from unreciprocated feelings, as the narrator hopes for a deeper connection and wonders why the other person is seemingly avoiding them.