Jam 2:23 And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.
Is God YOUR friend, friend?
Entirely different context, and therefore an entirely different definition of "friend".
The song's context infers an equal relationship - it's sappy and saccharine-sweet. Frankly, it sounds like a poem a love-sick teenage girl would write to her equally love-sick boyfriend. It sounds - well - juvenile and immature.
I would also daresay that Abraham would have a much different take on his relationship with God than a catchy "JC is my buddy" song.