Justin & Hailey Bieber Invite You Into Their House in 'The Biebers on Watch' Series

"The most rewarding thing about being married definitely is... just the companionship, I think, that you get out of it," Hailey, 23, says. "The more that you work on it, and you fight for it to be solid and you fight for it to be... it takes a lot of work wouldn't you say? We've had to work hard on our relationship and I think that that pays off in a way where you just become so connected to each other and so close and so solid with each other."

Spoiler alert: Justin, 26, is her best friend and he gets it, answering right back with "the security marriage gives you is make a covenant before God to love that person for better or worse, in sickness and in health, which is something that you've done amazing for me."

You might recall that in their previous docu-series, the YouTube Premium series Justin Bieber: Seasons, we watched the couple struggle together as Justin confronted his Lyme Disease and chronic case of mono.

The convo gets pretty deep, as the couple float on the water and talk about trust, forgiveness and why the period after their initial breakup helped them grow enough to enter their marriage with open eyes. The series, which will drop new episodes every Monday, Wednesday and Friday exclusively on Facebook Watch -- including a Facebook LIVE episode -- will also include cameos from their famous friends and it can be viewed here and on Justin's FB page.

Justin will return to your ears on Friday (May 8) with their charity single "Stuck with U," a benefit for the First Responders Children's Foundation.

Watch the first episode below.