In tomorrow’s episode, you’ll take a seat at their next meeting.
“It gets pretty intense and heartbreaking,” Hartley tells EW.
But it’s tough.

Credit: Ron Batzdorff/NBC
They’re in a really tough spot."
Sounds like Hartley is rooting for a rekindling this relationship.
“I like her and Kevin together,” he says.
But then there’s an explanation behind it too.
You hear both sides of the story, which is rare.
Even though there was wrongdoing, maybe [it was] on both sides.
You still love the person and that’s the way it is."
“[It] might be my absolute favorite of all of them,” he says.
She almost needs himnotto be there.
That’s another tough spot."
(The episode also will jump farther into the past as you peek back at their wedding.)
“The show takes a turn toward the end of this season.
It gets a little darker toward the very end of the season,” he notes.
This is an episode that you’ll see a lot of that."
This Is Usairs Tuesday at 9 p.m. ET/PT on NBC.
Sneak a peek atJack and Rebecca getting marriedin the opening scene of the episode.
To read a Q&A with Hartley about the most recent episode,click here.