just my opinion but maybe the singer has emets and he's singing about how this new love of his is helping him get over it? Making him stronger? like the part that says you've taken away my defenses, every note from every chord will set me free (free from emets?) 3 cheers for the end of 21 years? Maybe after 21 years of having emets he's finally found someone who makes him feel beter bout it? Who know but thats just my anaylasis on it, could be totally wrong!

Katie