Sure! Here's the requested content in spun format with synonyms:
Candace Fred and Ferb.
Cara has a soft spot for Fred, and Foster.
Phineas has won the affection of Cathy, and also Ferb.
Cassandra being with Finn and Felix.
Finn Candace, and Ferb.
Cathy has a deep connection with both Phineas and Felix.
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