The Prince and Princess of Wales are one tight unit, putting their love on full display in their signature subtle way since their uni days at St Andrew's to their joint royal engagements. Overt displays of affection aren't really William and Kate's style, but the pair have used quiet gestures to make their feelings known.
The couple sealed their love in 2011 with their picture-perfect wedding day and have been each other's rocks through their ups and downs, including Kate's cancer diagnosis in 2024.
© GettyMarking his wife's birthday in 2025, William declared his love for Kate by way of an Instagram message, writing: "To the most incredible wife and mother. The strength you've shown over the last year has been remarkable. George, Charlotte, Louis, and I are so proud of you. Happy Birthday, Catherine. We love you, W."
According to leading body language expert Judi James, the couple have become more comfortable with PDA since the Covid-19 pandemic. "William and Kate's body language has undergone a steady evolution that has been sped up thanks to the pandemic and lockdown", Judi previously told HELLO!. "Time spent together as a family appears to have created stronger bonds both as a couple and as a working team, and somehow turned back the clock in terms of their public signals of affection and love."
As the pair celebrate their 15th Valentine's Day as a married couple, we're taking a look back at the most romantic pictures of the royal pair…
Wedding day smooch
© GettyThe then-Duke and Duchess of Cambridge sent the world into a frenzy on their wedding day when they shared their first kiss as a married couple on the balcony of Buckingham Palace. Thousands of well-wishers, who gathered on the Mall to witness the moment, cheered gleefully for the fairytale moment that will go down in royal history.
Snowfight
© Getty ImagesWilliam and Kate showed off their playful side in 2016 when they were pictured during a snowball fight during a private ski break skiing in the French Alps. The price tried to dodge his wife's snowball, but it seems Kate's laser-sharp reflexes are just too good!
Packing on the PDA
© GettyWhile attending the 2012 London Olympics, William and Kate packed on the PDA as they embraced a celebratory hug after Philip Hindes, Jason Kenny, and Sir Chris Hoy of Great Britain won the gold medal in the Men's Team Sprint Track Cycling final. The pair share a love of sports and are not afraid of healthy competition. Kate even admitted in 2023 whiel appearing on Mike Tindall's The Good, The Bad & The Rugby podcast that a game of tennis turns results in them trying to "out-mental" each other.
Getting the giggles
© GettyIn 2018, the couple couldn't contain their laughter during a visit to BBC Broadcasting House amid the channel's work with William's Taskforce on the Prevention of Cyberbullying. The comical aspect of their relationship is something that has been seen countless times, showing that their ability to laugh together is the secret to an enduring relationship.
Holding hands
© GettyGenerally speaking, excessive PDA is a no-no for royal couples. However, in 2014, the pair made an exception as they held hands while descending the stairs of the Metropolitan Museum of Art in New York City following a special dinner. No doubt the romantic display was the result of an evening spent reminiscing as the dinner celebrated the 600th anniversary of the University of St Andrews, where they studied between 2001 and 2005.
Subtle reassurance
© GettyIn 2016, Kate showed William a subtle sign of reassurance while attending the official welcome ceremony for their royal tour at the British Columbia Legislature in Canada. William chatted away with Canada's then-prime minister, Justin Trudeau, as Kate made her warm presence known by gently laying her hand on his knee.
