As much its frustrating to watch mahnoor being rude, i can sort of see what she is doing
She wants to forget him.. She wants him to forget her.. Sometimes i think she pushes him so that he'll react or do something bad so she can properly dislike him and say to herself that he isn't as awesome as she used to think... But she keeps failing 
But ya, what she is doing taimur is terrible since he never forced her into this relationship and has been accommodating till now.. His dialogues that in getting her as a wife he has lost a friend is so sad

.... ghar mein competition nahin chahiye.