Sam reveals that he is the only prince of Denmark....and as he's going back to his place so he want Elizabeth too to come with him....

At firstly Elizabeth was stunned that she is standing in front of  prince of Denmark....but later she felt like cheated as he never tell her this ever and hided his true identity from her.

You are a prince...and you never told me...why you were hiding your true identity from me...

Elizabeth asked.

Not you but I hide this ...