The pair — who had been together since 1986 — apparently split in August after Graham told Winfrey he was “tired of being disrespected” and moved out of their luxury 5,000- square-foot Chicago apartment.
According to the National Enquirer, Oprah is also struggling to overcome a mountain of personal and professional headaches.
"Oprah has not been THIS unhappy in a long time!" a source told the tabloid.
"She's trying to hold herself together, but every day it seems like she gets hit with a new problem, and her world is collapsing around her.
"During their final blowup, Stedman told her she needed help, but Oprah told him he was seeing a problem that wasn’t there.
"Right now she’s in panic mode. She's fearful Stedman could write a book and tell ALL her secrets. Oprah feels she needs to buy his silence and is willing to pay him $150 million!"
Source: Show Biz