As for the whole Shukla-Rashmi angle, like most people seem to be saying, I too do strongly feel that these two have had an intense history. And it's definitely not just professional, it's deeply personal too owing to which both seem to have some grave unsolved feelings for each other. You know, the kind where two people might have once loved each other passionately and then that eventually turned into hatred. But the ferocity remains the same. There's this virulent energy around and in between these two. Could be the reason also why these two refrain from divulging any details of their history apart from name-calling, accusing or shaming each other at the drop of the hat because they both are aware that it'd mean undoing of them both, not just one. Although, I would give Rashmi the credit for being nice and accommodating towards him in the first week. Just because the woman chooses to keep a pillow wall between them or faces upside down while sleeping doesn't mean Shukla has a valid reason to hold a grudge for that. The instances where he's ruffled feathers with her (perhaps, on purpose) are more than she's ruffled with him.