Raghav is in for a world of hurt. He went through so many emotions today and will continue to do so. What struck me again, but wasn't a surprise, was that he knew his limitations as a husband in the sense that he could fight against the world for her but only she had the right to allow him to do so. He cannot force her for anything, just like he couldn't force her when she was approaching the seating area before the pooja. He had to let her make her decision and she chose him. It will always be this way between them because of the mutual respect and understanding.
My two favorite bits of the episode were when he felt for Ayi and her emotions upon seeing Mandaar (he's always been good to her) and when Ayi was reminding Sanki how Pallavi lost the home/family when he threw him out. Raghav gulped in that moment and kept his eyes on Pallavi the whole time, I am guess he remembered what he had done that night that had ended up in her becoming homeless. The way these two ended up getting married still bothers him on some level and is the basis for a lot of his insecurities.
Mandar read him very well and is trying to incite him to do something wrong. At the same time he will try to be the perfect gentleman around Pallavi and keep using her sympathy for him to his advantage.
Raghav showed some of his cards but Mandaar showed him nothing. I think he's done his research on Raghav too, how they got married, etc. and is attacking his insecurities. He does indeed seem like a formidable opponent to Raghav.
The episode was actually quite brilliant, written on so many levels.