I like the song. It's like having someone in your life before that made things perfect. Actually, the song (i think) for me is too sad. If you will really look or find the meaning of it. It's like you lost someone who is very important and all you have are memories being together. But in spite of it all. His memory is still the one giving you strength.
This song reminds me of a very special friend who already died. All that's left are memories and promises. And when things don't work out too well. How you'd wish he would still be with you. Comforting you.