hmmm..I was just thinking abt it and realised that it was not really Aarti telling Yash the truth but more like she making a blunder of mistaking Yash as Prashant and lashing out at him...Would she have told him the truth if Yash had confessed his love to her as per his plan??? Do you think she would trust his love and would tell him abt Prashant???? Her main concern is the third BMT and if you ask me, Prashant looks like he is fine to go on without it!!! Haha...But she would wanna start their love journey on a clean slate rite?