Girl pushing her hair behind her ear ?

Girl pushing her hair behind her ear ?.

My cousin said he knows when a girl is interested because she pushes her hair behind her ear.

I just wanted to ask if this is true.

I saw this girl today who works in Starbucks I don't know her we looked at each other and she starts pushing her hair over her ear and adjusting her clothes after looking at me.

Then a minuate later I went to the counter and she starts pushing her hair over her ear again even low her hair was fine.

And she seemed a bit nervous with the coffee she was nice low.

I just wanted to ask what anyone thinks.
Girl pushing her hair behind her ear ?
Post Opinion