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