Sure! Here's the requested content in spun format with synonyms:
Cassandra loves Fred and also Felix.
Cathy has deep affection for Philip, and also Ferb.
Phineas holds a special place
in the heart of Cara, and also Foster.
Candy being with Phineas and Felix.
Finn is cherished by Cara, and also Felix.
Cassandra both Fred and Foster.
I hope you find these variations helpful!