“America’s Sweethearts” star John Cusack all but burst into flames when sex goddess Pamela Anderson undulated into Taverna Tony’s in Malibu with a “stud-musician”-type date — who was definitely NOT Kid Rock! As Pam seated her shapely butt, she glanced at Cusack and . . . SHWI-I-I-ING! The two stared holes in each other until Pam’s date got up to say hello to pals at the bar — and Cusack made like Roadrunner! He grabbed his bottle of red wine, scooted over and sat next to the “V.I.P.” star! They got closerthanthis, whispered, giggled — EXCHANGED PHONE NUMBERS! Suddenly, Rocker Boy returned and snarled, “What’s going on here?” Cusack split for his table . . . Rocker Boy snapped, “We’re leaving!” But as she exited, Pam silently mouthed at Cusack, “Call me!” Moments later, Cusack left — looking like a man on a mission! Stay tuned.