Would this make a girl loose all ual interest in you?

tell me if your out the first time with this girl and you two express you are having fun with each other but when she starts doing things like sharing a small chair with you making it so your sitting so close that her legs and body is brushing up against yours and you dont reciprocate because it seems promiscuous because its the first time you have ever been with each other. you just met at the dc once before and talked for 2 hours then exchanged numbers. will that make her automatically loose interest and just think of you as a friend or if she was actually interested would you have more then one chance?