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