Kristen Stewart tried to flirt Aniston's fiancee Justin?

 
According to sources, Justin Theroux and his friend were having a drink, then Kristen Stewart approached their table and begin to talk to them.

Then Justin's friend left both of them. Kristen and Justin allegedly laughed and talked for about an hour. At one point, one witness saw Stewart touched Theroux's hand.

The source said, "It was kind of surprising to see, but she seemed completely relaxed."

What Aniston has to say about this?

Source