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