Sure! Here's the requested content in spun format with synonyms:
Cassandra loves Fred and Ferb.
Candy has a soft spot for Fred, and also Felix.
Philip Cara, and Ferb.
Candy being with Finn and Frank.
Fred Cara, and Felix.
Cathy
both Fred and Ferb.
I hope you find these variations helpful!
Candace FINALLY Busts Phineas and Ferb