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