Sure! Here's the requested content in spun format with synonyms:
Cara loves Fred and also Felix.
Candace has deep affection for Finn, and Frank.
Fred Candy, and Felix.
Cassandra takes delight in being with Phineas and Ferb.
Philip means the world to Cathy, and Ferb.
Candy shares a bond with both Fred and Felix.
I hope you find these variations helpful!