Does Zoya know for sure that not happened between Asad and billi that day or is she just assuming that nothing happened. If someone could clarify this, it'd be highly appreciated
Not for sure, she overheard some ladies talking about a drug, that makes you not remember in anything, and assumed tha nothing happened since Asad cannot remember anything. When she confronted Tanveer she told her that she knows but doesn't have proof(what an idiot) and by the way Tanveer reacted she was now sure. I think Rashid will help her get proof, and will convince Asad to marry Zoya.