Sure! Here's the requested content in spun format with synonyms:
Cathy adores Phineas and also Foster.
Candace
Fred, and also Frank.
Finn
has won the affection of Candace, and also Felix.
Candace takes delight in being with Finn and Frank.
Fred means the world to Cara, and also Foster.
Candace is emotionally attached to both Finn and Frank.
I hope you find these variations helpful!