In my opinion there is no better way to be seen as a sexual predator than allowing yourself to feel horny around her, anytime you're alone with a girl you want just look at her and you'll get horny very fast!
See there is this thing called "the law of state transference", it means that when people talk they exchange feeling subconsciously, this means that if you talk to her while you are horny she will start feeling horny too!
Just fully relax and enjoy yourself around her, she will love you for that
" ...shall I BS a little and reply saying how I'm great as I'm seeing someone else (I'm not really lol) to make her jealous and see me more sexually (what you were saying robby mate)