The 'Love Is Blind' season 8 reunion airs Sunday, March 9 at 9 p.m. ET on Netflix

The actress shares her sons Camden, 12, and Phoenix, 8, as well as daughter Brooklyn, 10, with husband Nick Lachey

"I think there's a certain heartfelt-ness to this season that maybe we haven't seen in others. There's a certain sensitivity to everybody in the pods this season," Nick Lachey tells PEOPLE of the Minneapolis-based cast

Nick and Vanessa Lachey, who host 'Love Is Blind' together, also opened up about attending couples counseling and why it's been crucial to the success of their 13-year marriage

"I love him for him, not because I was a groupie," the 'Love Is Blind' host said