Meaning of "Back in the Day" by Guy Sebastian

"Back in the Day" by Guy Sebastian is a nostalgic look back at a past relationship that was once filled with love and promise. The narrator reflects on how they used to love their partner and the efforts they used to put into the relationship, such as daily declarations of love and constant companionship. However, as time passed, they started neglecting their partner and taking their love for granted, leading to the deterioration of the relationship. The song conveys regret for not appreciating their partner enough and acknowledges the need to go back to the way things were in the past. It emphasizes the importance of showing love and appreciation consistently in a relationship to keep the spark alive.