Muse To My Ears..
Cole as a human is kind of weird...
But I'm happy for him and Phoebe.
Too bad Cole will eventually become "The Source" and tries to kill "The Charmed Ones" again...
But it's not him that wants it... just the power of "The Source". But then... Cole will re-appear for one episode in Season 7 explaining that he still watches Phoebe and wants her to move on with her life.
If the story of "The Charmed Ones" will ever continue, I think Cole will re-appear as a living human/demon.