I really wanted AsYa to be given a chance to grow before someone else came into the picture - be it for Asad or Zoya.
Asad doesn't see Zoya as 'wife' material yet. He thinks she's immature, selfish and too reckless. Not to mention her lack of cleanliness and the fact that she cannot be quiet for long periods of time
He doesn't want to admit to himself that he could fall for her - with all her 'flaws' according to him.
Zoya relies on Asad but I don't think she realizes what that means yet. She doesn't want to allow herself to fall for someone like Asad - someone controlling, who she thinks insensitive because he does not emote like she does and who has an obsessive nature about order in his life.
They needed more than one week or even a few days to let the 'rain dance' settle in their heads before some new drama starts up.