Paris Hilton isn’t ready to walk down the aisle with her new boyfriend.

The 28-year-old hotel heiress was less than impressed when Doug Reinhardt, a regular on MTV’s The Hills, got down on one knee and asked for her hand in marriage during a dinner party with her parents, Kathy and Rick, at The Ivy Restaurant in Los Angeles on Tuesday.

Where’s a video camera when you need one?!

Hours before the dinner, Doug hinted that he was ready to pull the trigger with a posting on his Twitter page, writing: “I’m about to do something very exciting and life-changing. I’ll announce what happens later.”

Doug, 23, presented Paris with a lavish Lorraine Schwartz engagement ring, but the socialite snapped the ring box shut and said she would need time to consider his proposal, Bang Showbiz reports.

The couple were photographed leaving the restaurant together a few hours later. Doug appeared “devastated,” onlookers say.