Is he mine?

Ipshita Jain-
a shy, introverted girl with a cheerful and lovable personality in highschool, turns out to be a daring, fierce and hot neurosurgeon.

Dhruv Chowdhary -
A cute guy with a lovable personality in highschool, becomes scary, bold, and the most handsome business man.

Ipshita and Dhruv were the most shipped bestfriends in their highschool but as they grew, they became strangers.

What happened to them? Why did they became strangers? Did they still love eachother or their love turned into boiling hatred? What happened to them that their cheerful personality changed to a scary one as they grew?
Will they be able to recognise eachother when they encounter after
15 years? Will they become each other's comfort or will they take revenge?