The bird and the worm lyric meaning?

what does he mean by

"If my segments get separated
I'll scream
And you'll be there"

does it imply that the bird (the girl) cut the worm in half (adam)? and does it imply that she did it intentionally or does he mean she will be with him even at his lowest???

am i looking too deep into this lyric from a 16 year old song lol?