Gesture them a REAL smile : )
I would recommend a gesture of some sort....a smile,a wave maybe,or prehaps a poke.Then,once you have their attention,try complimenting them,and hope that they get the message.Later,you can exchange pictures,and chat for a while.At the end of the day,you might want to end with a *hug* or even an "xxx",depending how well things went.Don't forget to :) a lot! lol
Did you bring Back round check print out.
Meet for a coffee and a chat, just smile introduce yourself and break the ice with a few familiar subjects you have spoken about and let the other person speak as well.
With a couple of cold ones.
in a public place
With a big hug
With a great big hug.