When Preet's name is finally cleared, where will she stand in Raj's life? Where will Harjeet stand?
Raj often says that he took revenge from Preet so that he could prove himself worthy to his father but what about after the truth comes out? How will he gain his father's approval then? Will he still treat Preet badly?
When he was drunk, he said that if Preet didn't kill Raman, everything would have been okay. He said that Preet's the only one for him, implying that he would want to marry her if she was innocent. This kind of tells me that this was never about gaining Harjeet's approval because if it was, he'd want to humiliate Preet regardless of whether she killed Raman or not. It's confusing.
There's also the promise that Harjeet made about asking Amrit to move into his room if Raj kicks Preet out of BH. If CVs don't get memory loss again, this issue will crop up after the Raman murder misunderstanding is cleared. I mean, Harjeet is not going to magically like Preet just because she didn't kill Raman; he's always disliked her because she's a Pawania. He can easily blackmail Raj to choose between his mother and his wife. Raj doesn't care much about Amrit now but I assure you that he'll suddenly care when it's required by CVs to cause drama.