Exactly when and why the actors broke up was not reported.
"He cooks me dinner, we drink some tea and watch some great TV shows or a movie," Willis told People.com in April about their low-key relationship.
Blair, 29, starred in the TV shows "The New Normal" and "The Hard Times of RJ Berger."
Willis, 25, is a singer and the daughter of Bruce Willis and Demi Moore. Her film credits include "The House Bunny" and "Sorority Row." She also has appeared on the small screen in "Hawaii Five-0" and "90210."