Put your arm around her shoulder.
From Create Your Own Story
It was an innocent gesture, honestly. It was just chance that your hand landed exactly on her breast. And hey, it'd be a waste of a coincidence if you were to do nothing now. You squeeze lightly and she glaces at you in suprise. You give her a reassuring smile and back her into a space between two shelves where you'll be out of sight.
"Hey..." you grin, "Relax."