Courtney a Ring Model.

Bachelor Ben Flajnik may choose Courtney Robertson as his bride to be for the 2012 season of the Bachelor and a place a huge beautiful engagement ring on her finger.

Now it appears the beautiful brunette villain Courtney has worn many engagement rings.

It's all quite innocent, but Life & Style reveals that "before Courtney Robertson was competing for an engagement ring from The Bachelor's Ben Flajnik, she modeled them for work!"

The mag reports:

In exclusive photos obtained by Life & Style (see above) and here, the 28-year-old Bachelor finalist is seen modeling gorgeous engagement rings for the Hearts on Fire diamonds print advertising campaign.

"She did this a few years ago," an insider tells Life & Style.

But that's not all she's modeling! In the racy ads, the brunette beauty also lies on top of an attractive male model and even shares a very passionate kiss with him.

On its website, Hearts on Fire says it offers "The World's Most Perfectly Cut Diamond."

As of the latest episode of The Bachelor, which aired on Feb. 20, Courtney is one of the three finalists still in the running for Ben's heart.

Who do you want to win Ben's heart and the final rose on The bachelor 2012?

(Image: Life & Style)