Sure! Here's the requested content in spun format with synonyms:
Cathy is crazy about Phineas and Felix.
Candace has strong feelings for Philip, and Ferb.
Philip captures the love of Candy, and Felix.
Cara finds joy in being with Phineas and Frank.
Finn Cassandra, and also Foster.
Cara is emotionally attached to both Phineas and Frank.
I hope you find these variations helpful!
Journey to the Center of Candace