On Saturday, as per the precap Sups and Mawali will be caught. They will confess their love for each other in front of Dutta. When Dutta will scold Nakku in front of them for asking him to accept Sups whole heartedly and give love a second chance, it will be disclosed that Nakku was well aware of Sups and Ravi may be by Kala/Sups-Ravi. The letter will then be the evidence of Nakku's betrayal.
And then Dutta will punish Nakku but not the way we all have speculated. As per yesterdays episode he said that he will torture the culprit in installments and even if he begs, death will not be granted. In that case throwing away Nakku or killing her will be very simple punishment. So what will be the innovative way of punishing her? Marry her and torture her through out the life for each and every moment. Make her life a living hell where she will ask for death but it will not be granted.
So I think definitely Dutta-Nakku marriage will take place but not on happy notes but to punish her.