Siren Song - S5-E4
Phoebe: Woman to woman, okay. Cole was the love of my life, and I'm finally learning to live without him. Calling him for a favor would open a can of worms that I've been trying to close.
Elise: Woman to woman. If you're still describing this guy as the love of your life, then the can is open, the worms are out, and you may as well use them to go fishing.
Chosen answer: Her agent/manager negotiated a special billing as part of her contract. It distinguishes her from the rest of the cast, probably when she became a producer on the show.
JC Fernandez