Brush your teeth and spray on some cologne, fellas: Olivia Wilde is single.

The House star has separated from Tao Ruspoli, her husband of eight years, sources confirm to People.

"They have been living apart after trying for quite some time to make their relationship work," an insider reports.

Wilde and Ruspoli, an Italian prince, eloped when the actress was only 18 years old.

You can next see the gorgeous star in Cowboys & Aliens, previewed HERE.