Make up your minds, people!The on-again/off-again relationship between Charlie Sheen and his wife, Denise Richards, is back off. "Denise is moving forward with divorce proceedings," her rep tells People.com. Earlier today, lawyers for Charlie and Denise asked that the case be removed from L.A. County Superior Court and transferred over to a private arbiter. Prior to today's legal filing, the couple -- who split last year when Denise was 7 months pregnant -- seemed to be on the road to reconciliation. At the end of last summer, they were spending time together as a family and Denise was seen wearing a new diamond ring. Just last month Charlie and Denise took a trip together -- without their kids -- to the Caribbean.In September, Charlie Sheen told David Letterman that he and Denise were reconciling and the reason they split was because he "was a big ass." A source close to the couple tells People.com: "I don't think this relationship [between Richards and Sheen] is going to work."Related: 12 Most Shocking Celebrity Splits.