Every element of their body language is analysed - something that was brought to attention last week as Prince Harry was seen batting his wife Meghan's hand away when she went to reach out for it.
"She [texted and] was, like, 'Hey - what are you doing May 19th?'" he recalled. Social media users especially could not stop talking about her unmasked freckles. Long before she and Prince Harry were an item, she was rocking the hat on her travels through Europe. "So instead of using it all over her face, I used it only where I needed to balance out any redness or uneven skin tone", he said.
Duchess of Sussex and Prince Harry, Duke of Sussex during Trooping The Colour on the Mall on June 9.
But, just because she's a royal, doesn't mean she has this one in the bag.
He topped off the eye look with a chocolate brown eyeliner.
Martin described the look as "completely natural".More news: Worst of the heatwave today, temps near 100, just slightly better Monday
The heart-warming exchange prompted royal fans to predict Meghan will be a "wonderful mother" to her own future children after she was pictured in deep conversation with the youngster.
"We wanted it to just be her", he said. "So she doesn't need to wear a lot".
Prior to royal life, the duchess embodied a breezy style - even for her first public appearance with Harry, she wore torn blue jeans from Mother (which the brand reissued due to the "insanely high demand") and a white button-down shirt from Misha Nonoo.
"That's the insane thing", he said.
The nuptials seem to have left quite the mark on the personality as she also wrote about it in the August issue of O, The Oprah Magazine in her "What I Know for Sure" column.