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