When Grimm returns tonight at 8/7c, our favorite couple, Monrosalee, will be going undercover to research a shady fertility clinic that uses unsuspecting Wesen in a secret ritual for good luck.

In the course of using themselves as bait, questions will arise about their own future and the possibility of starting a family.

On a recent Grimm set visit in Portland, I had an opportunity to ask both Bree Turner (Rosalee) and Silas Weir Mitchell (Monroe) their thoughts on that issue and their epic love story. Find out what they had to say!

Did Silas Mitchell Weir have any idea when Monroe and Rosalee first got together that they would become Monrosalee (a term he gives Bree full credit for coining) or that their love would be what I called "epic" in terms of television romance? He was somewhat taken aback at the thought. "I'm gonna tell Bree that you said that," he laughed. "Did you tell Bree that we're an epic romance? That's hilarious."

When I suggested he's the romantic lead in this situation, he admitted, "That's a new thing for me, I'll tell you what. We're just lucky that we work well together. It's very hard to see in the crystal ball, you know what I mean? But I remember the episode when she got the hankaflikafluas or whatever it was, and she kind of attacked me in the Spice Shop.

I realized that's hard to do when you don't really know somebody, you know what I mean? I was on the phone with Nick, and I'm like, 'I think these are the symptoms' and 'Oh my God I'm gonna get it and I gotta get out of here!' And we had so much fun that day and I thought that's great! But thank God that she's who she is and that we work together. But, that's interpersonal.

As far as did I know what they were gonna do with it? You hope that they're going to make it fun for everyone, but they drew that out, you know? But I also think, it was real. I mean, hey, when you marry somebody, it's gonna take a minute. But I like the fact, as you were saying, the word epic. In this world of Grimm, even though they're very keen on keeping the human stuff human, this is real stuff." Silas admitted, "No, I didn't know it was gonna be this big ole Monrosalee."

Turner shared that Rosalee intended to be on the front lines of change and equality for the species going forward, and what we witnessed with her putting her foot down regarding the inner-species bigotry and hatred solidified things for her and Monroe. It's a pretty good thing, too, if the two plan on having children together. Is it even that common? Turner said, "It doesn't happen very often for two species to have children together. Maybe they'll have problems. Maybe it's going to be a struggle."

"I love whenever the writers take real world issues and put them in our magical world," Turner shared, "There are Wesen out there there that have fertility issues just like everyone else and go to fertility doctors." In the course of tonight's episode she noted you can expect, "A lot of very sweet discussion between the two of them that answers a lot of questions that I know the fans have."

As Weir tried to describe what would result from the birth of two different Wesen, he chuckled, "I just hope it's healthy." But don't get excited just yet, we don't know if, or when, a baby Monrosalee might be joining Grimm.

Grimm Season 4 Episode 14, "Bad Luck," returns tonight at its new time 8/7, so don't miss it!

Carissa Pavlica is the managing editor and a staff writer and critic for TV Fanatic. She's a member of the Critic's Choice Association, enjoys mentoring writers, conversing with cats, and passionately discussing the nuances of television and film with anyone who will listen. Follow her on X and email her here at TV Fanatic.