She's really glad that he's smart enough to pay attention to her body language, that he comes to that conclusion himself. In a lot of ways, Gracie isn't acting that out of the ordinary. She's just far more familiar with him than she would normally be given the amount of time she's known him. She likes the familiarity and affection that he's showing her as well. Gracie is an affectionate person, for the most part so she doesn't need a lot of encouragement. Between Cisco and the coffee she's had today, it's more than enough.

Her gaze catches on his lips when he wets them then flicker back up to his eyes a moment after his gaze finds hers. He probably noticed that she was looking at his mouth. She doesn't have time to comment (and she would have just been making small talk) before his lips are on hers and she's not thinking about anything else except this kiss.

It ends all too soon, at least for her liking. She winds her fingers in his hair and tugs him closer while leaning in to kiss him. Her kiss isn't as chaste; it's not testing the waters. Her kiss is deeper, harder, the tip of her tongue touching his bottom lip as she opens her mouth to him.