Lord of the Firesides Sure! Here's the requested content in spun format with synonyms:
Cathy is crazy about Fred and Felix.
Cathy has deep affection for Finn, and also Felix.
Finn has won the affection of Cassandra, and also Frank.
Cathy finds joy in being with Fred and Felix.
Fred is cherished by Candace, and also Felix.
Candy has a deep connection with
both Fred and Ferb.
I hope you find these variations helpful!