I came here via a rec by Kita. And, just WOW. I didn't think I'd be floored by Ats/Btvs fic after being involved in the fandom for a recognizable period of time, but this surprised me. I don't know what to quote (because I'd quote mostly everything, here, since the language is so rich), but the last few snatches really stand out.

There could never be bad blood between you.

In the end, this is what love really tastes like: fear, despair, sorrow, rage.

Forgiveness.

To love is to constantly worry, for love is painful and inconsistent. I think you captured that message seamlessly throughout the entire thing.

Loved it. :)