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Rivers and Zimmerman have been together for the past three years, and the issues surrounding their split will be charted on the new season of Joan & Melissa: Joan Knows Best?
"Unfortunately, after almost three years, Jason and I are no longer together," Rivers told E! News.
"I am still trying to process what has come to light over the past few days and I hope that you will respect the privacy of my son and I while we heal," she continued. "Luckily, we are 'Rivers' and always bounce back.
"Thanks to all my supportive fans, friends and co-workers for their love and support which is carrying us through."
Back in March, Joan Rivers confirmed that E! had renewed the series for a second season.
Joan and Melissa: Joan Knows Best? continues Sundays at 7pm on E! Entertainment Television.
strong>Joan and Melissa: Joan Knows Best?: Melissa Rivers interview
