If any song makes me just sit back and say "fuck, I wish I could been a part of making something this good" it would be this one.
Mastodon has always been one of my favorites since Blood Mountain and Crack the Skye is one of my all time favorite albums but this song.........this song gets right to my core. As stubborn as I am at times I would come running back without my internal restraints. Once I love I always will and that part of the song got me. "Say when, and I'll come runnin back". Been almost 10 years now and I can never let myself go running back even if it was an option but I would still struggle to stop myself. The only problem is they will always have that piece of my heart that was lost in my youthful ignorance.
It is an impossible thing to do but we really should be more careful with our hearts or run the risk of giving it to the wrong person and never getting it back.