Sure! Here's the requested content in spun format with synonyms:
Cathy Finn and also Ferb.
Cassandra has a soft spot for Fred, and Frank.
Philip captures the love of Cathy, and also Foster.
Cathy finds joy in being with Finn and Foster.
Fred means the world to Candace, and also Ferb.
Cara is emotionally attached to both Fred and Frank.
I hope you find these variations helpful!