Chuck Liddell's next challenge: Marriage

UFC Hall of Famer Chuck Liddell is still undecided on the future of his fighting life, but he has made a major commitment in his personal life. Liddell recently proposed to his girlfriend Heidi Northcott.

According to People Magazine, Liddell popped the question after the two went on a helicopter ride of the Grand Canyon. On Twitter, they responded to congratulations messages from baseball player Brad Penny and Liddell's "Dancing with the Stars" castmate, Karina Smirnoff.

The pair have not shied away from headlines. They starred in a viral advertisement that showed Liddell and Northcott working out in the nude. Before his bout with Rich Franklin at UFC 115, Liddell credited Northcott for helping him refocus on training and fighting. He went on to get knocked out in that bout.

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