It's good that Vrinda will not marrry Yug.
The love in between VA-YU will stay in Yug' s heart.
VA does not love Yug anymore, so they will end up like Bharti and Yug.
Also, there is a saying you don't get married to ur lover. Love will die after marriage.
After 10 years if you see Yu-Va were fighting for simple things in life without a romance, that is not good.
RB and VA should be together, because RB is pure husband material, where Yug is a true lover.
The love he felt for VA is a very pure. So, let the love be there.
If they get married, the love will not be there for sure.