Lindsey Vonn gave Tiger Woods the ski boot after she caught him cheating with a fellow golfer’s ex-wife! The National ENQUIRER reveals in a bombshell report that Woods’ new squeeze is 27-year-old Amanda Boyd, whose marriage to struggling golfer Jason Dufner ended with a quickie divorce in April.“Even though Tiger dated Lindsey for years, he had a ‘thing’ for Amanda,” a source told The ENQUIRER. “At first, it was just innocent flirting, but earlier this year it became serious.” According to the source, Woods and Boyd have been carrying on their steamy affair for months. “Amanda is gorgeous, and she’s known as a big flirt with the other players on the PGA tour,” said another insider. “I guess her flirty ways and good looks caught Tiger’s eye.” But when Dufner found out his ex had been with Tiger, adds the source, “He was devastated!” Woods, 39, flew Boyd from her home in Alabama to Seattle for a few days in early June while he was preparing for the U.S. Open.