Sure! Here's the requested content in spun format with synonyms:
Cathy loves Phineas and Felix.
Cara Philip, and also Ferb.
Phineas captures the love of Cathy, and Foster.
Candy being with Fred and Foster.
Finn Candy, and also Felix.
Cassandra is emotionally attached to both Phineas and Felix.
I hope you find these variations helpful!
