Sure! Here's the requested content in spun format with synonyms:
Candy Finn and Ferb.
Cathy Finn, and Frank.
Fred
Cara, and also Felix.
Candace takes delight in being with Finn and Frank.
Finn has a special place in the heart of Candace, and also Foster.
Cassandra has
a deep connection with both Phineas and Frank.
I hope you find these variations helpful!