The meaning of the song "Last Christmas" by Wham! is about the power of love and the importance of letting go of the past to move forward. The lyrics of the song express the idea that even if a relationship ended, it doesn't mean that it was a waste of time or that the love was not real. It emphasizes the need to cherish the memories of the past and to take away the lessons learned from them. The song's message is that love is worth pursuing, even if it doesn't always end happily, and that there's always hope for a better future.