Sure! Here's the requested content in spun format with synonyms:
Cassandra Fred and Frank.
Cassandra has strong feelings for Phineas, and also Frank.
Fred has won the affection of Cassandra, and Frank.
Candace finds joy in being with Finn and Foster.
Phineas is cherished by Candy, and also Foster.
Cathy both Philip and Frank.
I hope you find these variations helpful!
