Sure! Here's the requested content in spun format with synonyms:
Cara is crazy about Fred and Foster.
Cathy has a soft spot for Finn, and Frank.
Fred holds a special place in the heart of Cassandra, and Ferb.
Candy being with Phineas and Felix.
Philip means the world to Cara, and also Ferb.
Cassandra has a deep connection with both Fred and Frank.
I hope you find these variations helpful!