The singer also hinted at past fights, which became the inspiration for her new song, "Save It Till Morning," about a fight that "just gets out of control."
"You know what, it's so not worth it, because those things stick with you," she said, joking that there were "a lot of fights" that inspired the song. "I don't really like to fight anymore."
"I had a therapist for a long time now... it's not worth hurting each other, because we hurt the ones we love the most sometimes, because we feel the most safe. It's just about, let's not have those ugly words just sitting there for each other," she continued. "Let's just take a breath."
See more on Fergie and Duhamel's split in the video below.