Sure! Here's the requested content in spun format with synonyms:
Cathy Phineas and also Foster.
Cassandra Finn, and also Ferb.
Philip captures the love of Cassandra, and Frank.
Cara revels in being with Philip and Ferb.
Fred is cherished by
Cassandra, and Ferb.
Candy shares
a bond with both Finn and Felix.
I hope you find these variations helpful!