Kate and William celebrated their first Valentine's Day after the illness

Prince William and Kate Middleton celebrated Valentine's Day on social media for the first time and for the first time publicly celebrated Valentine's Day and shared a romantic message on social media.

43-year-old Kate and 42-year-old William posted a cute picture of themselves on Instagram and Twitter, which shows them in a beautiful view of nature.

This photo is taken from Kate's emotional video that was released last September; A video in which he announced that he has finished his chemotherapy.

The video was filmed over the summer at Sandringham Royal Estate, where William and Kate were relaxing with their children George (10), Charlotte (9) and Louis (6) after treatment.