Tiger Woods is apparently a tiger in the sack, according to one of his alleged mistresses.

Life & Style can exclusively reveal the details of Tiger's steamy affair with Kalika Moquin, the marketing manager of the Bank nightclub in Las Vegas.

"Tiger had been on and off with Kalika for a few months," an insider tells Life & Style. Their last tryst was over the weekend of Oct. 23, when Tiger flew to Las Vegas to attend a friend's bachelor party.

"That was the last time he got together with Kalika," a friend tells Life& Style. "He was amazing in bed," she told the same friend.

Several sources tell Life & Style that Tiger wasn't happy in his marriage and that there was so much pressure on him. "He liked getting away from it all."

Because of Kalika, Tiger ended up staying an extra night in Vegas. "He left a day later than he was supposed to so he could spend more time with her," another source says. "She stayed over in his room at the MGM Grand."

Life & Style was the first to break the news of Kalika and Tiger's relationship, in the issue on newsstands now. For all the details, pick up a copy today!

Photo Credit: R/R