last time when RK and madhu separated i think after that trp went going downwards...and i think that is when CV's decided to bring madhu and Rk in same frame...as in studio...but later...they showed RK forcefully bring madhu at home...the reason only when Rk and madhu in same frame...trp increase...so ofcourse i believe the marriage will happen... .as trp has to increase and it does only when they r together...
now if CV's have planned for separation after marriage...it could b only that madhu is kidnapped or something...as drashti will b busy with jdj also...
but i dont think madhu will go back to her home...and Rk staying in same mansion or something...
either they will stay together in Rk mansion after marriage or madhu will get kidnapped after marriage...only that way they will b separated...otherwise CV's cannot separate them again for revenge or misunderstanding...as they have shown love and trust between them...