"Grey's Anatomy" star Camilla Luddington had an interview with TV Line's Comic Con panel on Sunday where she dished about her character, Jo Wilson, and Alex Karev's (Justin Chambers) relationship.

Luddington revealed she is nervous about the upcoming 12th season because things have been good with Jo and Alex, and that is not typical for a "Grey's Anatomy" couple.

"I'm nervous because Jo and Alex have had three seasons of being pretty good like, which is really unusual on Grey's. They've had issues, but they've gotten over them. So, that makes me think that they moved in together I just don't trust that things are going to continue to go well, "she told TV Line.

Luddington said she detests the home Jo and Alex moved into. "It is hideous," she said.

In a recent interview, The Hollywood Reporter asked Luddington whether or not Jo's house purchase was to see if Alex would settle down with her.

"I don't know what happens next season, but I don't think Jo was thinking anything [like] that she for sure had to go. I believe that this purchase is her staying, but also seeing if Alex really wants to take that next step with her," the actress explained.

"She's definitely saying that now she wants to put down roots; she's very serious about that. She's crazy about Alex and you hear her say she loves Alex. I don't think she's leaving."

Fans desperate to learn If Alex will propose marriage in Season 12 have fished for information on social media, including tweeting the actress.

Luddington told The Hollywood Reporter while nothing has been discussed about the future of the onscreen couple's relationship, if Alex did propose, Jo would probably accept.

"In that time-jump episode, I got so many tweets about him proposing! I don't know if it puts pressure on him. I think Jo and Alex are moving in a very similar pace within their relationship. I don't think Jo is wanting to have kids immediately, she's not expecting to get a ring. If it happens at this point, I'm sure she would say yes," she said.

Watch "Grey's Anatomy" Season 12, which premieres on ABC in September.