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Sure! Here's the requested content in spun format with synonyms:
Candace loves Finn and also Felix.
Candy has strong feelings for Fred, and Ferb.
Finn holds a special place in the heart of Cathy, and also Frank.
Candace revels in being with Fred and Felix.
Phineas is cherished by Cathy, and Frank.
Cassandra has a deep connection with both Phineas and Frank.
I hope you find these variations helpful!