Danica McKellar has filed for divorce from her husband of three years, TMZ.com reports.

McKellar and husband Mike Verta, a composer, split last week. McKellar filed at the L.A. County Superior Court, citing "irreconcilable differences." The Wonder Years alum is asking for joint physical and legal custody of their 1-year-old son, and, according to the documents the couple has a pre-up.

The 37-year-old actress and math guru wed Verta in March 2009.

http://www.tvguide.com/News/Danica-McKellar-Divorce-1048564.aspx?rss=breakingnews&partnerid=popeater&profileid=breaking

Wow, didn't even realize that she was married! Sorry to hear it didn't work out.

I saw an article about this the moment I logged on, and I was STUNNED! I could not imagine anything going wrong with her marriage! We're talking the girl who played Winnie, not Britney Spears for crying out loud!