Earlier this week, a source told ET that Lauer and his wife were already living separate lives before the sexual misconduct allegations were made public.
“Matt and Annette lived separately, with Matt spending many nights in his Manhattan apartment," the source said.
The two have been married since 1998, and were last seen publicly with each other in September, smiling during a lunch date in New York City.
Still, their 19-year marriage hasn't been without issues, including tabloid rumors of Lauer allegedly engaging in extramarital affairs, which he has denied. Annette also reportedly filed for divorce against her husband in September 2006, before eventually withdrawing the documents and reconciling, according to The New York Daily News. According to paperwork first obtained by the National Enquirer, in the filing, Annette accused her husband of "cruel and inhumane acts," reportedly also claiming that Lauer was controlling about "even the smallest decisions," and alleging that he showed "extreme anger and hostility" towards her.
Meanwhile, Lauer's ex-wife, Nancy Alspaugh, who was married to Lauer from 1981 to 1988, only had good things to say about the 59-year-old newsman when ET spoke with her last week.
Here's our exclusive interview with Alspaugh: