Why simmy is believing Parmeet blindly.?

In the lounge of the hotel Simmy told ishita that her husband is really very touchy, mischievous, naughty...
I think her marriage must be more than a year or two still she did not see a glimpse of this precious character of her husband... parmeet is a man who knows how to play his games, but unfortunately he's still human and can't be perfect
So why is Simmy believing that her hubby Parmeet is "like" Lord Ram who was committed only towards his wife...
Why all these women are lying??
What will ishita gain in lying that parmeet was trying to be the perfect rapist.
Raman also must think that Ishita helped them(simmy and her hubby)
ishita asked him to find a job for Parmeet why will she lie??