Because he 's touching her thigh .Because she got up from his lap .Because he is physically attracted to her .Because she still has her finger on his lip .
Why is he staring at her body ?
She gets up from his lap , still has her finger on his lip and he 's staring at her body and touching her thigh . He smiles then get up and go forward to stop her from leaving . She 's not going to ... She 's walking away till she finds herself against something .