Way back when, Audrina Patridge and Corey Bohan went on a first date on "The Hills," and now the couple is taking a big step forward in their relationship: They're engaged!

The former MTV star -- who has been with the professional BMX dirt bike rider on and off since 2008 -- are going to be husband and wife, the blushing bride-to-be ecstatically confirmed on her Instagram account.

"He proposed and I said..... YES!!!" Drina captioned the sweet snapshot of the lovebirds above. Ah, we've come such a long way since that time homeboy wore combat boots to the beach (ahem, Justin Bobby).

Meanwhile, Corey couldn't help but gush about his future wife -- and post a photograph of her new diamond ring.

"Last night was everything I wanted it to ever be @audrinapatridge," he added. AWWWWWWWW.

So how did Corey ask for his longtime love's hand in marriage? Like a true gentleman, the Australian native spoke about it with her father first and then made plans to have dinner at the same restaurant (the Summit House in Orange County, California) as her family on Friday night.

"When dessert time came, he ordered cheesecake and the waiter brought it out on a platter with a beautiful silver cover," the former Epic Records employee told People. "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."

She continued: "Then 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!" Fittingly, her loved ones -- who were eating in another part of the dining establishment -- joined the future Bohans for a champagne toast.

Cheers to Audrina and Corey! Be sure to offer your well wishes to the pair in the comments -- and for a fun rewind, relive the aforementioned retro romantic outing with the clip below:

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