I believe this is is what will happen... Somehow Khushi will discover that Shyam wants to kill Anjali so that he can marry her. Most likely she will get bitten by scorpion and then Shyam will do a beside confession which only only Khushi will hear... like he used to torture babuji.. pretty much in that mode...for good measure babuji will be there too to hear it...
Arnav meanwhile will admit to himself that he loves her .. some sort of awakening or something. Or maybe not..though it would be nice to see him prepare to propose to her and confess to her..
Khushi will feel that the only way she can prevent Shyam evil designs is if she lives in Raizada house and watches over Anjali.. and the only way she can do that is if she marries Arnav. So she will tell Arnav that he has to keep his side of the bet and marry her because she wants a rich husband...
Arnav who has been feeling soft and mushy towards her will become ASR again and go in the hate mode. Because this will prove to him that Khushi is a gold digger. In his head he will think he must marry he to teach her a lesson because nobody makes ASR do what he does not want to do.
I believe she will insist that they marry alongside Aakash and Payal so that she is in Raizada house right along with payal. Then Shyam will start talking crap about her to Arnav who will believe it and make her life hell.
It also makes sense because after the wedding there is no reason for her to continue to visit RM house... The CVs have to get her a become a permanent fixture in the house somehow
Any thoughts?