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