The 25-year-old Twilight star was spotted leaving a gym Saturday in Los Angeles, rocking a black workout top and pants, looking pensive as she headed to her car.
The actress's rep first announced news of their split earlier that day, saying in a statement, "After much consideration, Nikki Reed and Paul McDonald are ending their marriage. They have been living separately for the past six months due to work obligations."
"They will continue to share their love of music, and are still working on their debut album, I'm Not Falling, releasing in 2014. They remain best friends and look forward to their continued journey together."
The duo first met at the Red Riding Hood premiere in March 2011 and later confirmed they were dating. Seven months later, they tied the knot in front of close family and friends in a private ceremony in Malibu in October 2011.