What happened to Aayan where?
At the masjid, when he didnt hug Humeira back.. He himself denied what happened but in all the chaos he isnt 100% sure either if he made a mistake or not, so he felt guilt to hug humeira back.. didnt think it approrpiate.
I see nothing wrong with that. And as for at SM, He said Nikaah hua tha BUT.. Siddiqui slapped him before he could finish and explain.. So that also isnt his fault..
The only place Aayan and Zoe are both at fault is in their immature and impulsive decisions to sit in at the mandap for example instead of ask others for help, and immature in not telling anyone about what happened until confronted by it and in laughing off the entire incident.
The rest, i think both of their reactions where spot on: CONFUSED. thats the only way they can really react..