I don't understand

Can someone tell ... I am so confused.. Before maha episode ... Yash never show feeling .. How all of sudden he show that he is madly in love ... When one day before this episode ... He said there will not behave like husband and wife .. Just friend .. So why so drastically they change his feelings

Maybe because today was an emotional/special day in his life. It could also be because Aarti looked very beautiful in the saree. Or his mood changed for the better in a day, etc...

he act like friendly to arti and mother of kids

we need a yashpsychopedia to understand what he feels at one time and what after some more time
I've given up the task of trying to understand Yash long back
Yash is unpredictable

Sometimes some things are better let alone

😆 he's like a cake, can be multi-layered, too many tiers and so many decorations on the icing 😆well, Aarti was looking such a knock out that even the blind could see 😃 or i would have pulled my hair again if he passed up oggling at her😳

yashs mood swings are worse than a preg woman.😆mood aya toh he'll shower love or scream for no reason or torture himself

i doubt that exactly meant he is inlove with Aarti, maybe more he's inlust 😆 or it could be another slow addition and deduction just like the pregnancy that some loud-mouthed aunty Savita had to announced it before he finally got it😆

This is not the first time he is staring at her. This has happened before also. Before going to Mumbai and in Mumbai. But b'se of consummation, his mind could not digest it n he felt guilty for betraying Arpita.

He locked himself in a shell, a cacoon. Though he says Aarti is his friend, he is extraordinarily careful about his friend. All the time his eyes are around her n he saves her from all the problems of falling down, or hair entangling etc. He immediately gets water for her when she coughs a bit. nobody takes so.. much care of a so called friend.

His mind is not yet detached from Arpita so he cannot let himself get attached to Aarti but 'Ye Dil Hai' jo ab dhire dhire aarti ke liye bhi dhadakta hai; its just he is not aware of it.