Country star Kenny Chesney is romancing the woman he was dating before his ill-fated marriage to actress Renee Zellweger, according to reports. The 39-year-old, who married Zellweger just four months after they met in 2005 and then split four months later, is stepping out with Florida real estate agent Allison Stewart. A source tells American magazine Star, "Kenny and Allison were dating up to the time he married Renee. "They started dating again five months ago, when Kenny was looking to buy a home in South Florida. He specifically called Allison to help him, and they've been together ever since."