Sure! Here's the requested content in spun format with
synonyms:
Cathy Phineas and also Frank.
Candace has strong feelings for Philip, and also Ferb.
Fred captures the love of Cassandra, and also Felix.
Candace takes delight in being with Phineas and Frank.
Philip means the world to Cathy, and Frank.
Cassandra both Phineas and Foster.
I hope you find these variations helpful!