King Charles III and Queen Camilla have had a whirlwind journey in their love story from when they first dated in the early 1970s.
For decades, the two have remained side-by-side through turbulence, including navigating Charles' divorce from the late Princess Diana, blending their two families and overcoming the less-than-popular public perception of their relationship.
In 2023, Charles and Camilla each had their crowning moments when the United Kingdom celebrated the first coronation in 70 years.
MORE: How to watch the coronation of King Charles III and Queen Camilla in the USOn May 6, 2023, both Charles and Camilla assumed additional royal responsibilities and sovereign titles following a historic coronation ceremony, taking on their next chapter together officially as king and queen.
In 2024, the king and queen were met with a new challenge. In January, after the monarch underwent a procedure to treat an enlarged prostate at the London Clinic, Camilla was photographed by his side as the two were leaving the hospital and heading home.
On Feb. 5, Buckingham Palace announced that King Charles has cancer. The palace did not specify the type of cancer, the stage of cancer or the type of treatment.
On Nov. 14, Charles celebrated his 76th birthday with Camilla by his side.
Below, see a timeline of Charles and Camilla's relationship, through the years.
Then-Prince Charles met Camilla Shand in the early 1970s. The two were reportedly introduced by a mutual friend at a polo match in Windsor Great Park.
"She was totally unfazed by all the trappings of monarchy. And also she had a wicked sense of humor," said Robert Jobson, an ABC News royal contributor.
After a brief dalliance, Charles and Camilla went their separate ways.
Camilla married Andrew Parker Bowles, an army officer, in 1973. The two welcomed their first child Tom Parker Bowles in December 1974 and Charles was named his godfather.
Camilla and Parker Bowles welcomed a daughter, Laura Parker Bowles, in 1978.
A then-32-year-old Charles married Princess Diana, who was 18 at the time, in the summer of 1981. The couple announced that fall that they were expecting their first child together.
Prince William was born in June 1982. Two years later, Prince Harry was born in September 1984.
Charles and Diana's relationship quickly became rocky, and according to Charles' authorized biography, he began an affair with Camilla in 1986.
MORE: Princess Diana's former secretary speaks out ahead of coronationCharles and Diana's marital problems were reportedly exacerbated by rumors about his relationship with Camilla.
Externally, Camilla was vilified by both the British press and the public, often being blamed for the breakdown of Charles and Diana's "fairytale" marriage.
In a rare interview with British Vogue last summer, Camilla revealed how she coped with the scrutiny, saying she needed to "find a way to live with it."
"Nobody likes to be looked at all the time and, you know, criticized. But I think in the end, I sort of rise above it and get on with it. You’ve got to get on with life," she said at the time.
In December 1992, Charles and Diana announced their separation and officially divorced a few years later in 1996.
Camilla and Andrew Parker Bowles announced their divorce in 1995.
The same year as Camilla's divorce, Charles and Camilla attended a party together for a mutual friend, and the pair were reportedly seen dancing together.
Diana was tragically killed in a car accident in Paris, France, two years later, on Aug. 31, 1997.
Charles and Camilla appeared together publicly for the first time in 1999 while leaving a birthday party for Camilla's sister at the Ritz Hotel in London.
Charles and Camilla moved into Clarence House, a royal residence in Westminster, London, in 2003. The couple announced their engagement two years later -- 35 years after they first met -- and were married in a civil ceremony on April 9, 2005.
Following their marriage, Camilla gained the title of Duchess of Cornwall, and not the Princess of Wales title long associated with Diana.
Over the subsequent two decades, Charles and Camilla attended royal events together and supported Charles' mother Queen Elizabeth II.
In February 2022, Elizabeth announced it was her "sincere wish" that Camilla take the title of queen consort when Charles took the throne.
Elizabeth died at Balmoral Castle in Scotland on Sept. 8, 2022, at the age of 96.
Charles subsequently ascended to the throne, becoming King Charles III, and Camilla officially adopted the title of queen consort.
Charles and Camilla, who will use the title Queen Camilla, were crowned on May 6 in a historic coronation ceremony at Westminster Abbey.
Both of Charles' sons, William and Harry, attended the coronation.
On Feb. 5, 2024, Buckingham Palace announced that Charles has cancer.
"During The King’s recent hospital procedure for benign prostate enlargement, a separate issue of concern was noted," Buckingham Palace said in a statement. "Subsequent diagnostic tests have identified a form of cancer."
On the day the news was announced, Charles started "a schedule of regular treatments, during which time he has been advised by doctors to postpone public-facing duties," the palace said, and during this time he'll "continue to undertake State business and official paperwork as usual."
The palace has not specified the type of cancer, the stage of cancer or the type of treatment.
"The King is grateful to his medical team for their swift intervention, which was made possible thanks to his recent hospital procedure," the palace said in its statement. "He remains wholly positive about his treatment and looks forward to returning to full public duty as soon as possible. His Majesty has chosen to share his diagnosis to prevent speculation and in the hope it may assist public understanding for all those around the world who are affected by cancer."
Queen Camilla will continue with her public duties, according to a palace spokesperson.
ABC News' Jaylene Lopez contributed to this report.
