Durga and dev flashback for everything

I am finding it very amusing that dev and nithya have flashback for everything...from waking dev up to feeding him and tying dhaagas to eating cake to just about everything!!!! Frankly their good for nothing flashbacks are getting on my nerves...what to they want to show ..how deep their friendship was or how annoying they both were/ are?????

Which driver, poor man from conservative family lets his daughter mingle this close with boss' nephew?

Nitya is even in bedroom!

Dev also had keys to Mitras house given to him by Nitya.

How did Goenkas also allow this mingling with driver's daughter? Were they not class conscious?

Makes no sense!

Mitra parents flashbacks were needed to move story ahead and give background of past. But they kill time on these Dev flashbacks that do not explain story.