"When you're going through your ups and downs, and Drew is going through something now, and everyone's been through stuff… is it an automatic to reach out to the other person?" Cohen asked.
"Of course, yeah," Diaz shared. "Everybody pulls the wagons around [for] our friends, whoever needs us at whatever point in time. Even if it's something that the public doesn’t know about. Internally were all going, 'OK, who needs us now?'"
"And that really is, I think, a major part of the connectivity that we need," she added. "We need to keep those things connected."
"Sadly our family is separating legally, although we do not feel this takes away from us being a family," they said in a statement to People. The former couple have two daughters, Olive, 3, and Frankie, 1.
Diaz, who served as one of Barrymore's bridesmaids at her 2012 wedding to Kopelman, became close friends with the 41-year-old Golden Globe winner during Charlie’s Angels, which came out in 2000.
"We've been in this industry for a really long time together, and that's a feat," Diaz explained to Cohen. "To have people that you've known for that long, those are real relationships, real friendships. We've gone through a lot in life together."
According to the Bad Teacher star, it's important to keep your friends close as you age and grow.
"As you get older you start to lose people in your life, and when you lose people in your life, you have less of a purpose," Diaz said. "So it's really, really important to stay engaged."
"I know, for myself with my girlfriends, how important it is to stay engaged [and] how close we all are together and how much we rely on each other," she continued.
In her new book, The Longevity Book: The Science of Aging, the Biology of Strength, and the Privilege of Time, which hit shelves on Tuesday, Diaz showed her love for her husband, Benji Madden in a heartfelt dedication where she wrote, in part, "I never knew what love was until I found you."