Ok guys , so with the mangalgauri sequence being shooted i am assuming the suicide drama takes place before it and pallavi is still with raghav despite of Bake's suicide drama. Now if something as major as suicide couldn't convince P to shift her base to D house what else can. Because a seperation albeit a temporary one is imminent .
So logically i think P will leave R only for his own good and nothing else. And here that smuggling drama will come into play . M will come to know about it probably with Ved's help and he will go to P with proofs against R threatening to hand it over to police/ media . He will also threaten her to keep it as a secret from R and a naive P would believe him. Obviously the condition would be to either marry him or come to D house to live with him.
Pallu will obviously make this sacrifice for raghav's safety and go which would obviously be the biggest heartbreak for R . He will go back to his old self , blame P for breaking his trust , cheating on him.
Eventually R will get a hint about something being off and he will come to D house . He'll investigate and we will obviously witness lots angsty romance btw P& R during this phase.
At last R will expose M maybe with help of P and that is how the loop will close