Relation between Khushi and Shyam

Now Akash and Payal are going to marry. Shyam is Akash's brother-in -law . So  Khushi is Shyam's sister. Am I right?  Shyam is still going after Khushi. These are not matter for him. I am confused. Please help me.

yeah... u r rite KKG is shyam's sis by relation