Sure! Here's the requested content in spun format with synonyms:
Cara Fred and also Foster.
Cassandra has strong feelings for Fred, and Frank.
Finn has won the affection of Cara, and also Ferb.
Candy revels in being with Philip and Felix.
Finn means the world to Cara, and Foster.
Candace has a deep connection with both Phineas and Foster.
I hope you find these variations helpful!
Candace FINALLY Busts Phineas and Ferb Phineas and Ferb