I can kind of see the Monica/Qazi flirty thing, but I'm not so sure that he has a crush on her, really - I think he's just happy to have a friend in Gurukul, you know, a person who actually sticks up for him.
As for Arijit... I'm still kind of confused. Yesterday I was very mad, but today I think I'm confused. I still wonder why he did what he did - there are many possible reasons - 1) He likes Monica, 2) She influenced him, 3) He and Shamit were having problems, 4) He considered Shamit a threat and wanted to get rid of him, 5) He felt that Shamit was plotting to get rid of him, and therefore took measures to secure himself.
Or, another reason Shamit could be out is because Fame Gurukul is scripted.
One thing I'm certain about, and I think most of you agree with me no matter what your opinion on Shamit, is that Shamit was better than Monica, and he deserved to be in Gurukul more than she did. Arijit must have a strong reason, and I really wonder what that is.