The 25-year-old entertainer first stepped out with the 29-year-old actor in August 2012 when they were spotted holding hands in Hollywood.
Earlier this week, Rumer was seen heading out of the Andy Lecompte Salon after getting her hair done in West Hollywood.
In case you missed it, Rumer recently showed off her toned bod in a sexy exclusive photo shoot as part of the Just Jared Spotlight of the Week series.
WHAT DO YOU THINK of Rumer Willis and Jayson Blair calling it quits???