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