Robin Thicke did more than just grab blonde Lana Scolaro’s derrière as shown in a photo taken at 1Oak’s VMA party last week, the 20-year-old claims in the latest issue of Life & Style.

Scolaro says she hooked up with the “Blurred Lines” singer, 36, while his wife, Paula Patton, was just a few feet away and that he approached using the line, “I just love the fact that you’re so young.”

“His hands were everywhere,” Scolaro, who says she met Thicke at a party a week earlier, tells the magazine.

She also claims Thicke told her Patton was “chill” and encouraged Lana to talk to her.

Scolaro says she later accompanied the couple to a bash at a suite in the Greenwich Hotel, where Thicke followed her to the bathroom.

She tells the mag, “He turned off the lights so no one could see us, and he started making out with me. He was grabbing me. He was like, ‘I want to get you into bed!’ ”

But an insider tells us Thicke and Patton were together all night and that neither is concerned about the story.