Since their relationship first became public in 2003, the Prince and Princess of Wales have always kept things pretty private—especially when it comes to showing affection in public.

In fact, you can probably count on one hand how many times they’ve kissed in front of the cameras. And when it comes to talking about each other in interviews, Kate and William have always stayed pretty quiet.

So, it came as a surprise to fans of the future King and Queen this week when a lip reader claimed that Kate was seen expressing affection for William during a recent royal event.

The couple appeared in London on May 8th with their three children—Prince George (11), Princess Charlotte (10), and Prince Louis (7)—to mark the 80th anniversary of VE Day.

VE Day celebrates the surrender of Germany in World War II and honors those who lost their lives during the conflict.

Earlier today, the whole family attended a church service as part of the official events. That came just three days after they were seen watching the annual VE Day parade from the balcony at Buckingham Palace, alongside King Charles III and Queen Camilla.

Much of the attention on Monday was focused on little Prince Louis, who once again stole the spotlight with his famously cheeky behavior.

According to body language expert Nicola Hickling, who spoke to The Sun earlier this week, Kate was seen leaning toward Charlotte and asking, “Doesn’t Papa look smart today?”, referring to Prince William, who was dressed in his military uniform.