PLEASE HELP< MY FRIEND WAnts to know this since she does not have an account on here?

If you are at a table of 3, two girls and one boy, the girl only talks to the boy, and then randomly looks at the girl and laughs (she showed signs of being attracted to the girl before), and purposely leaving the girl out of the conversation and only talks to the guy, but look many times at the girl (short glances) ? What does mean?

PLEASE HELP< MY FRIEND WAnts to know this since she does not have an account on here?
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