He is still not sure that Juliet realy loves him. If he reveals himself, she may call the guards and have him killed.
Juliet reveals her private thoughts that she would not have told romeo to his face
at first she doesn't, but he tells her he is there eventually
Romeo. The other one is Juliet, as if you didn't know.
In Act 2, Scene 2 of Romeo and Juliet (the balcony scene), Juliet recognizes Romeo by his voice. "My ears have not yet drunk a hundred words of thy tongue's uttering, yet I know the sound."
I know but its a secret
No! The family does not know that Romeo and Juliet are getting married. But that is not the only marriage in the play. There is a planned wedding of Juliet to Paris. And that wedding the family does know about.
One example of this would be at the end when we know Juliet is not really dead but Romeo thinks she is.
Balthazar tells him about Juliet's death and burial.
No she does not. Juliet's parents don't even know that she married Romeo
They play hard to get
Not at first, but then he figures it out.
They were born into them.