Sure! Here's the requested content in spun format with synonyms:
Cassandra Finn and also Felix.
Cassandra has a soft spot for Finn, and also Frank.
Finn captures the love of Candy, and Ferb.
Cara takes delight in being with Fred and Foster.
Fred Candace, and also Foster.
Candace both Finn and Felix.
I hope you find these variations helpful!
Candace FINALLY Busts Phineas and Ferb Phineas and Ferb