Kate Middleton and Prince William are "more open" and "talk about their relationship together" amid her cancer journey, a source tells PEOPLE.

When Kate Middleton celebrated her 43rd birthday on January 9, her husband Prince William wrote a tender message and shared it on the couple’s public Instagram account. According to royal expert Ingrid Seward of Majesty magazine, the display of affection was a sign that the couple has grown closer following Kate's cancer diagnosis in early 2024.

Kate Middleton, known worldwide as the Princess of Wales, endured arguably the most turbulent year of her life in 2024. Amidst growing concern over her health and well-being, Kate

A source close to the royal family commented on the pair's marriage following Middleton's latest health update.

It was a royal treat. On January 10, Prince Harry and Meghan Markle made an unannounced visit to the Pasadena Convention Center, where displaced Californians were sheltering from devastating wildfires.

Prince William and Princess Kate famously met and fell in love during their time at St Andrews University. And on the day of their joint graduation, the Vice Chancellor made a prophetic comment

Kate Middleton, who is celebrating her 43rd birthday on Jan. 9, has proven herself to be the shiniest jewel of the British monarchy. The princess is married to Prince William, heir to the throne.

Kate Middleton and Prince William met while studying at St Andrews University and returned to the institution in 2005 for their joint graduation ceremony

There's no denying that Kate Middleton has an impeccable sense of style, but the princess is very rarely seen actually doing the shopping. Not to mention, after being diagnosed with cancer last year,

Kate Middleton did a surprise visit at the Royal Marsden Hospital, which she is a patron of now and a royal commentator compared her recent actions to Princess Diana