Hiten is a nameless character in the serial so far as they protrayed him like shah rukh khan who gave advice to rani on her wedding in kank.
Hiten is an ajnabee in the park who asked gauri to tell him her problem as his opinion will not be affected by family or emotion and she will never see him again so she will not need to worry abt it ever
Hiten is an ajnabee to gauri who she may never meet again, he just gave her his opinion and it up to her to decide wht she wants to do. After tht he left the park