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