Mark Sloan’s presence will loom over Grey’s Anatomy this week as Callie (Sara Ramirez) takes a step toward moving on from Arizona (Jessica Capshaw) by returning all of her stuff—including a wedding present from their late friend that actually becomes a point of contention.

“It’s baby steps towards being in a relationship that’s full of mutual respect, kindness, generosity, love and partners in sharing a child,” Capshaw tells EW, noting that Callie and Arizona haven’t had many conversations outside of work. “When this incident comes up, there’s actually something else to deal with, so they go back to having to relate to each other in the way that they used to, but they’re trying to be super civil, sweet and kind.”

Alas, this is one present Arizona doesn’t necessarily want to accept. “When Callie gives her the vase and it’s super duper ugly and she really doesn’t want it, she doesn’t want to reject the sentiment with which it was given, which was Callie coming forth and giving her something and taking care of her in some way, but at the same time, she really doesn’t want the vase, so she tries to manipulate the situation to give it back to her,” Capshaw reveals.

Just because Callie is returning Arizona’s belongings doesn’t mean “Calzona” is done for good, it’s just another step in the duo trying to find their own happiness. “I just feel like it’s been a real natural progression,” Capshaw says. “We had the episode where Callie and Arizona knew the best thing for both of them was to not be together, and then Herman [Geena Davis] came, so it was a train we were all on that nobody could get off. So, for a lot of episodes, the focus wasn’t completely on: are they together or aren’t they together? And now that some time has passed, it’s not as fresh a wound, it doesn’t hurt every time the wind blows on it. It’s healing and we’re moving on. Things are good.”

Are they good enough for Callie and Arizona to eventually get back together? “I don’t know,” Capshaw responds. “Only because they had to go through so much to make that decision to be apart, it’s so hard to think about them being together. They’re just getting to the point where that’s all good. I would feel bad if they then took steps backwards and ended up in a relationship that was super challenging. Everyone longs for the beginning, I get that, you want them to go back to the beginning, but you can’t do that with anything in life.”

Besides, Callie will soon have a potential new love interest in Kevin Alejandro’s police captain—though he’s only slated to appear in one episode so far. Could a love interest also be on the horizon for Arizona? “Maybe,” Capshaw says coyly. “I bet. Chances are!”

Grey’s Anatomy airs Thursdays at 8 p.m. ET on ABC.