Sure! Here's the requested content in spun format with synonyms:
Cassandra adores Finn and also
Felix.
Cathy has a soft spot for Philip, and Foster.
Phineas Cassandra, and Foster.
Candace finds joy in being with Finn and Foster.
Fred has a special place in the heart of Cassandra, and also Ferb.
Cassandra shares a bond with both Philip and Felix.
I hope you find these variations helpful!
Phineas and Ferb Get Busted