Sure! Here's the requested content in spun format with synonyms:
Candace Finn and Felix.
Cassandra has deep affection for Fred, and
Felix.
Finn holds a special place in the heart of Candace, and also Ferb.
Cassandra finds joy in
being with Philip and Felix.
Phineas Cara, and Felix.
Cathy has a deep connection with both Philip and Foster.
I hope you find these variations helpful!