This picture is meta on so many levels like asklkgf;sjf
Molly bringing coffee for Sherlock and also trying to impress him…..and at the exact fucking time John is giving his phone, also known as his “heart” to Sherlock.
So even though Sherlock’s looking at Molly in this scene, really what’s happening is an exchange of hearts between John and Sherlock.
It’s like a ballet ! Beautifully choreographed.