Um, just saying, do you know how good it feels to be petted. No, I’m not kidding. Like when someone runs their fingers through your hair or scratches your scalp… that feeling is like heaven condensed into someone’s fingers. All the tensions in your neck just… slips away. Especially that last gif, she is rubbing out the tension of his neck and spine.
So if Tony is looking at her like she is the best thing that’s ever happened to him… well there is a damned good reason for it.