Ashlee Simpson and Pete WentzLast week, Ashlee Simpson surprised a lot of people when she filed for divorce from her husband of two-and-a-half years, Pete Wentz. Even more surprising is that the couple had lunch together with their son Bronx on Valentine's Day, proving that the split was indeed amicable.

A source close to the couple told PEOPLE that while the couple is not reconciling, their priority is being good parents to their son Bronx, 2. The source also mentioned that Simpson is still staying at her parents' home.

The source is quoted saying, "They just had a meal together with their son. They're both focused on making this transition as easy as possible for him."

At the time of filing for divorce the couple had said through their spokesperson, "We remain friends and [are] deeply committed and loving parents to our son Bronx, whose happiness and well-being remains our No. 1 priority."