One of the first times these two really connected was in "Chapter 12." Petra's abusive ex Milos had come to the Marbella and when Jane found Petra crying in the stairwell, she was genuinely concerned. Jane's compassion is to credit for this moment, but it was the first sign that these two women could be more than enemies.

Jane helped with Milos again in Season 2 when he blackmailed Petra into marrying him. While Jane and Petra were on pretty terrible terms (since Jane just found out that Petra artificially inseminated herself), Jane still checked in with her to make sure that Petra wasn't in danger in "Chapter 27" and even spoke to Magda to find a way to help. Jane admitted that two percent of her cares for Petra and when Petra made it clear she was going through with the marriage, Jane was the one who put the traditional Czech bridal crown on Petra's head.

In "Chapter 28," Petra showed some vulnerability by asking Jane how she learned about parenting. Jane picked up on how Petra must feel lonely and tricked Petra into coming over for Thanksgiving dinner, which Petra gratefully accepted. This same episode also showed Jane supporting Magda's release from prison, which was incredibly generous.

Petra not only called and apologized to Jane in "Chapter 29" after snapping at her (because she was busy hiding Ivan's dead body in her bathtub), but then she invited Jane for a lunch date. Unfortunately, because of the Ivan complications, Petra had to cancel lunch and pretend she didn't want to be friends with Jane. But this marked the first time that a friendship seemed feasible.

What started out as an intervention for Rafael in "Chapter 36," turned into Petra motivating Jane to speak up for herself to the author who stole her idea. Petra claimed she just wanted someone to yell at because she was past her due date, but there clearly was more to this.

At the bookstore, Petra went into labor and with Rafael stuck in traffic with Michael, it was up to Jane to coach Petra through labor. There are just some things that will change your dynamic forever and childbirth is truly one of them.

Petra had a hard time after Anna and Elsa were born and when Jane forced her to go to a new mom group in "Chapter 38," Petra learned she might have postpartum depression. Without this intervention and support, things could have become even darker for Petra.

Jane's help with Petra's mental health didn't go unnoticed. When Michael and Jane struggled to find a house to rent that was in their price range, Petra decided to secretly rent a home she bought to them and subsidize their rent. She also defended Jane to Rafael, so it was clear their relationship had turned a real corner by "Chapter 38."

At the end of Season 2, Petra and Jane were in a fight about Anezka, but then things got even more complicated with Rafael's insider trading and their opposing moral views. But Petra still showed up to Jane's wedding to Michael in "Chapter 44" and looked thrilled for her.

Rafael had had sex with Anezka as Petra in disguise, but Jane was the one to figure out that Anezka had paralyzed Petra and was impersonating her. Sure, the idea was so crazy that she and Rafael vacillated about it and Jane didn't actually see the suspicion through herself. But Jane really saved the day in "Chapter 48" by noticing something was off.

So much had changed in "Chapter 55" following a three-year time jump. But flashbacks showed that after Michael died and Rafael went to prison, these women bonded as a family through weekly brunches with their children. And it's a tradition that continued in the present.

Petra's not one to admit her real feelings — especially to Jane. But when she was conflicted about whether or not to get back together with Rafael in "Chapter 63," she headed to Alba's house to get Jane's advice. "I don't care if you don't want to be in the middle. I need to talk this over with someone and you're my only real friend," Petra said.

In the same episode, Jane put her own feelings aside to help Rafael and Petra rekindle their romance — even though it meant feeling like she and Mateo would be on the outside of Rafael's life. Rafael and Petra's second try was short-lived, but it was a meaningful gesture on Jane's part to encourage them.

Petra and Jane were on the outs again in Season 4, but Petra was set on making amends in "Chapter 73." Although Jane tried to cancel their weekly brunch, Petra barged into Alba's house to make sure it happened. And this brunch led to Jane briefly ghostwriting for Petra's lifestyle book.

Petra's twins revealed to their half brother Mateo that the tooth fairy and Santa don't exist. Jane was outraged, but she was way more upset about Xo's breast cancer in "Chapter 77." Through talking with Alba, Petra knew how to dress to portray the tooth fairy that Xo had explained to Mateo and surprised him one night. She gave the gift of magic back to Mateo and the gift of comfort to Jane.

By the end of Season 4, there was no denying that Jane and Petra were family. But the emotional Jane made the cooler Petra proclaim her feelings in "Chapter 79." Jane was upset that Petra's new girlfriend JR didn't like her, but admitted it was only because she loved Petra. And despite her reluctance, Petra said I love you too for a hilarious and sweet moment.

Although these women have had so many ups and downs and will undoubtedly continue to butt heads during the final season, Jane and Petra love each other — and not even murder attempts and husbands coming back from the dead can change that.