The California native added that they've "talked about" getting married but have no firm plans in place.
"There's so much pressure from the media and other people, so we try not to tell everyone our business," Patridge explained.
"It will be up to us." PHOTOS: Audrina Patridge's best bikini moments Unlike former loves Ryan Cabrera, Mark Salling and Chris Pine, Patridge said Bohan gives her a sense of security.
"With other guys in the past I dated, I never felt safe.
" PHOTOS: How the Hills stars have changed Even so, Patridge revealed that they don't have an anniversary.
"We've been off and on for almost five years, but we've been solid," she said.
During 7-Eleven's 86th Birthday Party in Malibu on Tuesday, July 9, the former MTV reality star spoke to Us Weekly about her on-and-off boyfriend Corey Bohan, whom she began dating in 2008 after breaking up with bad boy Justin "Bobby" Brescia.
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! " Drina captioned the sweet snapshot of the lovebirds above.
He's not super metro." PHOTOS: The most memorable moments on The Hills Patridge also admitted that it can be "hard" being in a long distance relationship.
"Whenever he's in different countries it's opposite time, so we won't even talk to each other on the phone for like five days," she said.
We'd go out and I felt like I had to defend them, and so with Corey I feel like I'm safe -- he's a guy's guy," the 28-year-old told Us.
"He's not afraid to get dirty and that's what I like about him.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. Ah, we've come such a long way since that time homeboy wore combat boots to the beach (ahem, Justin Bobby).