Sure! Here's
the requested content in spun format with synonyms:
Cassandra is crazy about Phineas and Foster.
Cara has deep affection for Phineas, and Ferb.
Philip has won the affection of Candy, and Foster.
Cathy being with Fred and Frank.
Philip is cherished by Cassandra, and Felix.
Candy both Philip and Frank.
I hope you find these variations helpful!