Prince William and Princess Kate seem to be just as madly in love now as they were 12 years ago when they tied the knot at Westminster Abbey.
While much of their relationship is obviously kept private, the couple are extremely comfortable giving the public an insight into their tight knit marriage.
Body language expert Judi James has discussed in detail the specific traits that the Prince and Princess of Wales use to convey their romance, the Express reports.
She stated: “William and Kate have been keeping royal fans, and each other, supplied with a stream of romantic gestures, tie-signs and touch rituals since they first married, but their technique seems to be driven by inclusion.
“We can see they are a romantic and in-love couple but they never allow their body language rituals together to exclude the viewer.”
Judi opined that their romantic gestures are neither performative nor overzealous and for a very important reason too.
She explained: “Subtlety is vital for their public role and as royals, they provide signals that they are a strong couple (which is important after the dysfunctional relationship dramas of the previous generation of royals) but that they maintain an even, steady emotional trend rather than a soap opera of passionate highs and lows.”
The expert claims that the royal couple treat the public to a “peek at the private nature of their romance” through the "key trait” of proximity.
She used a sweet snap of William nuzzling into the back of Kate's head during the Virgin Money London Marathon in 2017 as an example where the couple handed out water to runners.
Judi said: “When they enter one another’s personal space on tours and visits, William in particular seems to be unable to avoid breaking what often seems to be his own rules of non-tactile public behaviour and intensifying the romance of the moment via gestures like this little nuzzling kiss of her hair.
“The gestures are often more for him than her as she might not even be aware at that moment but this is a trait many couples will share.
“Proximity will suddenly bombard the senses, meaning William will smell Kate’s perfume or her hair as he suddenly moves into her close orbit, making him motivated by the desire to get even closer and involve touch, too.”
Another "key trait" that pair used to showcase their romance is touching Judi claims as she spoke of how Kate places her hand on her husband's thigh even at "more formal events".
Get the latest celebrity gossip and telly news sent straight to your inbox. Sign up to our daily Showbiz newsletter here.