Sure! Here's the requested content in spun format with synonyms:
Cathy loves Finn and also Frank.
Cara has strong feelings for Finn, and Frank.
Fred captures the love of Cathy, and Ferb.
Cara being with Finn and Frank.
Philip means the world to Candace, and Ferb.
Candy has a deep connection with both Fred and Foster.
I hope you find these variations helpful!