Is sid some kind of forced relationship with Aarti I mean Aarti being the girl of family s choice and Sid has been told u won't find a better girl then her for u propably asked Aarti to join BB with him. Aarti must have been long time friend of him who must have liked him. Aarti s understanding of relationship is adjustment. So she kept adjusting to his mood swings obviously because she liked him and wanted to get accepted by him.
Sid on the other hand certainly behaves like he is in forced relationship. There is no affection only frustration but there is one thing that is loyalty is from both sides.
With Rashmi it's more like frustration of things not working out.