It means no matter what you will be there for that person you love, no excuse. You will never let them fall no matter how close they come. And when you see there smile, you love it, your amazed. It doesn't matter what you have to do, you will make the other person happy and honestly even die for them if it comes down to it. This song for one year now has reminded me of me and my fiance. He loves me and I love him and every word in this song describes us both.