Meaning of "Last Thing On My Mind" by Ronan Keating

The lyrics of "Last Thing On My Mind" delve into themes of regret, reflection, and lost love. The narrator, who is awake at Four O'Clock in the morning, can't stop thinking about their past relationship and how it ended abruptly without warning. They recognize that both parties were living separate lives even when together, highlighting a lack of communication and understanding. The narrator expresses deep regret for not being able to find the right words to apologize and salvage the relationship when they had the chance. The chorus reflects the narrator's realization that their former partner is now the last thing on their mind, symbolizing a missed opportunity and the consequences of their actions. The reflective tone of the song conveys a sense of longing for what could have been and a deep sense of remorse for not appreciating the relationship while it lasted.