“Andrew not having seen Emma for several days walking in and discovering that moment without rehearsal, only surrendering to that moment as an actor, and I think it allowed him to reach a depth of performance that is very difficult to achieve, and it feels real.”
In the first gif, you can see Emma Stone (left) looking for Andrew Garfield (right). In the second gif, you can see her blowing Andrew a kiss. At first, Andrew waves at her, until he realizes she is blowing him a kiss. So he clasps his hands to catch her kiss. And holds it.