Will Kirby and Erin Brodie, his girlfriend of six years, have taken their winning relationship to the next level.

The Big Brother second-season champion and Brodie, the former two-time For Love or Money winner, have gotten engaged, People reported.

"I'm so fortunate to be in a relationship with Erin," Kirby told People. "I'm thrilled to now open the next chapter of our lives together."

Kirby, a board-certified Beverly Hills dermatologist who also competed on Big Brother 7: All-Stars in 2006, reportedly proposed to Brodie last Tuesday with a nine-carat diamond engagement ring set in platinum.

The proposal occurred after the couple shared an intimate dinner on the ocean at sunset, which included grilled prawns, lobster, oysters, and a tomato salad -- a few of Brodie's favorite dishes.

The California residents, who have one 15-month-old son together aptly-named Cash -- whom they welcomed in May 2010 -- have yet to determine their wedding date, according to People.

Kirby -- who was more affectionately known as "Dr. Evil" -- won Big Brother's 2001 second season and claimed the show's $500,000 grand prize before returning for the CBS reality series' seventh-season all-stars edition in 2006, where he finished fourth. Afterward, he also co-starred on E!'s Dr. 90210 reality series.

Brodie, who currently works at a Fortune 500 software company, appeared as one of the bachelorettes during For Love or Money's first season on NBC in 2003. While she was selected by star Rob Campos during the finale, she opted to take the $1 million prize over a relationship with him.

She subsequently starred in the show's second season as the object of affection for numerous bachelors -- risking the $1 million she won during the first season in an effort to double it. She selected Chad Viggiano during the finale, and -- more importantly -- he selected her, meaning she got to pocket $2 million.

Kirby and Brodie had announced they were expecting their first child together last November.