Melinda Gates allegedly knew of some issues taking place in their marriage but might have not known the full truth.
"Melinda was aware there were some issues, but it's unclear if she knew about all of it," a source told PEOPLE.
As RadarOnline.com reported, a rep for Bill Gates admitted the business mogul had an affair with an employee in 2000 but denied that it lead to him stepping down from Microsoft’s board of directors, contrary to recent reports.
The New York Times posted a bombshell report over the weekend claiming the mogul “pursued women who worked for him at Microsoft and the Bill and Melinda Gates Foundation.”
They also called out Bill's “questionable conduct in work-related settings.”
Melinda met Bill when she began working at Microsoft as a project manager in 1987.
The couple said "I do" in 1994 and were married for 27 years before announcing they officially called it quits earlier this month.
While the world was shocked over their divorce news, Bill and Melinda's inner circle reportedly weren't surprised their marriage didn't work out.
"He could have treated Melinda better," a source divulged to PEOPLE. "He's not a saint, but there isn't one thing that created the final split. It goes deeper than that."
"It's many years of differing views of the world, the foundation, and of life in general, and those things piling up. They are older and each personally looked at life and asked, 'Is there more out there than what I have?'" they added.
Melinda filed for divorce on May 3, citing in court documents that their marriage was "irretrievably broken."
The two are gearing up to battle it out in their $130 billion divorce.
According to reports, Melinda is planning to fight Bill's decision to leave each of their three kids only $10 million from his estate, which is worth $130 billion.
Speaking of their children -- as their marriage comes crumbling down, their oldest child is getting ready to exchange her own nuptials.