The actor-singer is working on a new sitcom for the WB network in which he'd play a baseball star involved in a new marriage, according to the Hollywood Reporter.
There's no title yet for the show, which comes from Danny Jacobson, the co-creator and executive producer of NBC's relationship comedy Mad About You. Jacobson tells the trade paper that the show will be "a romantic comedy under the microscope."
Lachey previously did several guest spots on the WB show Charmed.
"After three years of marriage, and careful thought and consideration, we have decided to part ways," the statement read. "This is the mutual decision of two people with an enormous amount of respect and admiration for each other. We hope that you respect our privacy during this difficult time."