Sure! Here's the requested content in spun format with synonyms:
Cassandra loves Fred and also Frank.
Candace has strong feelings for Finn, and also Foster.
Finn holds a special place in the heart of Cara, and Ferb.
Cathy being with Finn and Felix.
Finn is cherished by Cassandra, and Foster.
Candy shares a bond with both Phineas and Felix.
I hope you find these variations helpful!
Phinéas et Ferb le film Candice face à l'univers Wikipédia