The engagement took place Friday night at Summit House in Orange County, California, Audrina told People, noting that Corey asked her father's permission three weeks before the occasion.
"When dessert time came he ordered cheesecake and the waiter brought it out on a platter with a beautiful silver cover," she shared. "I noticed all the waitresses gathering with phones and thought, What is going on! Then all of a sudden the waiter lifted the silver cover and I saw the ring in a box with white rose petals on the plate."
"It was then that Corey dropped to his knee and said, "We have been together for many years now and I love you more than anything. I want to spend the rest of my life with you – will you marry me?"
"I was in shock and kind of didn't even hear him but I said yes!" Audrina told the magazine. Her family then surprised her and celebrated with the newly-engaged couple.
The 30-year-old reality star will soon join the married club with the rest of her castmates. Whitney Port is the most recent Hills star to wed, earlier this month -- Lauren Conrad married William Tell in 2014, Kristin Cavallari tied the knot with Jay Cutler in 2013 and Heidi Montag swapped vows with Spencer Pratt in 2009. The whole gang is all grown up!