keep it playful, do some teasing here and there and when you do dont wait to see her reaction just do it.
such as when your walking tell her
you: you know there are a lot girls that are so jealous of you right now.
remember that everything is no big deal, and play it cool
as you are walking side by side you could even playfully lead her into a tree or off the sidewalk. this could even be a way to introduce the kino escalation.
if you are playful with her, just remember to not over do it, calibrate to each situation that arrises. basically be serious about something for a min and then go back to playful. or vice versa. but dont over do either.
just my opinion i hope it helps
good luck
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