Further

I feel that this song is about a loved one- he knows that in the grand scheme of things their relationship didn't affect anything- they were only mortal, and their relationship did not transcend time & space, but it was still everything to him, and he is slowly giving up on life inside after losing this person. He wonders if they will ever be together again, perhaps in the future, perhaps in another life, and if that happens, he will remember everything that happened from his own life, and wonder who they were together