Billy Joel and his third wife, celebrity chef Katie Lee, 27, are calling it quits after nearly five years of marriage.

“After nearly five years of marriage, Billy and Katie have decided to separate. This decision is the result of much thought and consideration. Billy and Katie remain caring friends, with admiration and respect for each other,” a rep for the couple tells The New York Daily News.

According to The Daily News, Lee, the former host of Bravo’s Top Chef, has been spotted out regularly with Yigal Azrouel, a 36-year-old fashion designer from Israel.

A rep for the couple insists the designer has nothing to do with the separation.

“Their break-up has nothing to do with Yigal,” Joel’s spokeswoman, Claire Mercuri, told the paper. “Their decision to separate was absolutely unrelated to Yigal.”