The quote encapsulates the intensity of missing someone. "Some days" implies periodic emotional waves. "Can't stop thinking about you" signifies persistent thoughts. The quote conveys the profound impact of the person on the speaker's mind and emotions, especially on certain days.
The quote underscores the unpredictable nature of longing. It reflects the variability in emotions over time. "Can't stop thinking" emphasizes the person's constant presence in the speaker's thoughts, illustrating the depth of their connection.
In essence, the quote speaks to the enduring impact of someone on the speaker's mind. It highlights the moments when thoughts of the person become overpowering, underlining the emotional significance of their presence in the speaker's life.