Singer Ashlee Simpson-Wentz filed for divorce from her rock star husband Pete Wentz, Tuesday, People.com reports.

The celebrity magazine said that the break-up is amicable, but that the couple has been growing apart for quite some time and that they're on very friendly terms.

The couple, married for two and a half years, has a 2-year-old son named Bronx together.

According to the report there was no third party involved in the split. Pete Wentz is currently tour with his new band Black Cards.

Pete Wentz is best known as the bassist and primarly lyricist for the rock band Fall Out Boy, which is currently on hiatus. Ashlee Simpson Wentz is also a recording artist. Her latest album Bittersweet World was released in 2008.