Heather Locklear is engaged to on-again, off-again boyfriend Chris Heisser after a years-long rocky relationship, according to multiple reports.Engagement speculation began after the actress, 58, was spotted wearing a diamond ring on her left hand in photos published by the Daily Mail on Friday, June 19. In the shots, she was seen running errands in California.Locklear and Heisser, 58, were high school sweethearts in the ‘70s.