The tension that we all thought we saw between Ann and Matt appears to be very real.

According to US Weekly, a source said that "Matt Lauer is 100 percent behind Ann leaving," and adds that in the days leading up to her last day, Ann and Matt "were really icy to each other, and she refused to speak to him all week."

Ann, as recent as last week, was still saying that she and Matt had good chemistry. She told USA Today, "You know, Matt and I have had great on-air chemistry for 14 years, been part of the number-one winning team for a history-making number of years. That said, I just finished my freshman year as co-host. In every single co-host's first year, there have been kinks to be worked out, and perhaps I deserve as much blame for that as anyone."