Ashlee Simpson and Pete Wentz Divorcing 37.30K Richard Lawson 02/09/11 02:09PM Filed to: splits splits pete wentz Ashlee Simpson Divorce Gettypic Tweetg Tweetd Totally rad super-couple Ashlee Simpson and Pete Wentz, she of the famous older sister, he of pop-pretentious band Fall Out Boy, are ending their nearly three-year marriage. The couple's son, Bronx Mowgli, will continue to be named Bronx Mowgli.