A boy tells his friend he doesnt like her and is not his type but he then blushes and looks really interested when he hears about the girl and wenever he see's her he stares what does this mean?

It means that he knows his friends will think the girl is too "low" for him. Insted of admitting that he like her, he would rather seem cool to his friends and just watch her. Its true. When a guy like you but is too scared to ask you out because he is afraid of getting rejected just talk to him, but dont let him think you want a friendship or things will turn UGLY!