Well, I think it's so sad how much they had to endure together. It wasn't Cole's fault that The Source took over his body in season 4, but then, like Phoebe has said, even though however much he tries to be good and use his powers for good things, evil will always be a part of him. They pretty much always had a rather tense relationship, yet very passionate, you could see just how much they really loved each other. And I soon began to love their chemistry together. But things were always getting in the way, and it's sad how they only had a short time where they could actually be happy together once Phoebe had used the potion to rid his Belthazor side and his powers. I can understand Phoebe's need to move on from Cole after all that has happened, but I hope they can at least remain somewhat friends.
