Hmmm, this song is meant for someone that the guy used to love, his first love. That she will always be remembered, and she is always beautiful in his eyes. It's either the guy or girl is already married or in relationship. Guess, it is sad if I'll hear the guy sings this for me especially if I was also in love with him, and we're in the wrong time, and now, we're married to different people. Does it make sense?