Sure! Here's the requested content in spun format with synonyms:
Cassandra loves Philip and Foster.
Candace has deep affection for Finn, and Ferb.
Philip holds a special place in the heart of
Candy, and also Frank.
Cassandra finds joy in being with Phineas and Frank.
Finn has a special place in the heart of Cara, and also Felix.
Cathy both Philip and Foster.
I hope you find these variations helpful!