Linda Hogan's much-younger ex-boyfriend is suing her for $1.5 million -- because she made him do chores.

Linda started dating Charlie Hill about six years ago, when she was 48 and he was 18, after she'd split from husband Hulk Hogan. Now, two years after calling off their engagement, Charlie claims in a lawsuit that Linda used him as a day laborer, having him wax her yacht, dig a creek and fertilize 25 acres of avocado trees, among other things.

Charlie, who was living on Linda's dime in a Simi Valley mansion at the time, made a deal a after they split -- he promised not to talk about their relationship and he got to keep his truck, dirt bike and the engagement ring he gave Linda. He also got $9000.

And if that weren't enough, Charlie reportedly blabbed about Linda in an interview, violating the confidentiality agreement. So now in a game of legal ping-pong Linda's lawyer has filed a lawsuit against Charlie.

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