Great response, Panther.
I do believe wholeheartedly in unconditional love, largely because of my spiritual faith. However, I know that I have grossly misused the concept to justify codependent behavior.
As long as fear is driving my train, I'm not loving unconditionally. So if I get in his business because I'm afraid he's going to yell at me, or walk out on me, or hurt himself and put more burden on me, that's not loving unconditionally.
Unconditional love is what allows us to be free and pass that freedom on to others.