Sure! Here's the requested content in spun format with synonyms:
Cathy loves Finn and Frank.
Cathy has deep affection for Philip, and also Ferb.
Phineas has won the affection of Cassandra, and Felix.
Candace being with Philip and Felix.
Philip means the world to Candy, and also Foster.
Candy is emotionally attached to both Fred and Foster.
I hope you find these variations helpful!