We had never seen anything like the PDA from them before. In the video that was uploaded to their Instagram page on September 9, Princess Kate was seen embracing and kissing Prince William. The two appeared to be unable to keep their hands away from each other when they were together.

"The last nine months have been incredibly tough for us as a family," Princess Kate said in the voiceover, revealing that she has completed chemotherapy and is now cancer-free. She has stated that the entire journey has provided her with "a new perspective on everything" and it encompasses her marriage as well.

"During her treatments, Kate could only focus on getting healthy and protecting her kids by reassuring them that she was going to make it," an unnamed source said of George, 11, Charlotte, 9, and Louis, 6. "She was grateful for William's support during the roughest moments and put everything else that was going on between them on the back burner."

But now that she's past that, "Kate is addressing all the major relationship issues they had before her diagnosis, particularly those brought on by his affair scandal. Last January, she was in agony over whether she should divorce him and those feeling didn't just go away."

As of right now, the source claimed that Princess Kate is once again confronted with the most important decision of her life: Should she break up with William? The princess, who is 42 years old, is "still haunted by headlines about William's cheating," according to the insider. Furthermore, due to the fact that Rose Hanbury, the claimed "other woman," is a member of Princess Kate's social circle, "she still has to see her all the time, which is incredibly awkward. Kate can't escape the whispers."

Rose's attorneys have been denying the affair and William's own legal team has reportedly labeled claims of his adultery "false and highly damaging" in letters to several magazines. But still, "any wife would be devastated to hear the rumors repeated over and over again," the source explained.

"It was especially painful for Kate because they were brought up again right when she was dealing with her initial cancer diagnosis, and everyone was speculating that she and William had separated - even Stephen Colbert was talking about it!" it went on.

The Firm's rigorous philosophy of "never explain, never complain" did not help matters, as per The Hollywood Reporter.

"Princess Kate has always played by the rules, but ignoring the problem just made it worse. It would have made a huge difference for her if William came out and publicly, loudly condemned the rumors from the start. But since he didn't, he's doing everything he can now to placate her and make her feel loved and respected. He definitely stepped up while she was sick, but he's still got a lot of groveling to do," the insider shared.

The three-minute video, which had never been done before, was a significant step in that direction.

"The prince and princess are usually incredibly private, especially with the kids, but this was shockingly intimate. It was a calculated move to show a united front so there would be no doubt as to the state of their marriage. And beyond that, the video was designed to celebrate Kate," the informant said.

Business Times has reached out to Princess Kate and Prince William for comments.