I’ll never look at you the same way again, Chace.

Chace Crawford learned about the birds and bees from a a surprising source: Shauna Sand!

Four years before Gossip Girl brought him instant stardom, the 18-year-old hunky college freshman had a steamy, sex-filled romance with model/actress Shauna, the ex-wife of Lorenzo Lamas and May 1996 Playmate who is 14 years his senior!

“He was so incredibly beautiful — I immediately fell in love with him!” Shauna tells Star exclusively about meeting Chase at a college party in Malibu. The couple began dating “and I even gave him a key to my apartment,” Shauna said.

0They quickly wore out a path to the bedroom. And though Chace has said he dated a girl for three years while in high school, a friend tells Star: “Chace told me, ‘Shauna was the first girl I ever had sex with! She blew my mind, and I’ll never forget it!’”

Although the friend says Chace and Shauna had a “secret relationship,” the couple dated off and on for a year before they drifted apart. Chace eventually got his acting career off the ground and Shauna remarried. But, in 2007, after Shauna’s brief second marriage ended, Chace suddenly appeared in her life again and the spark was reignited!

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