Good attempt at tackling the unconventional topic of May-December romances. However, the treatment is totally unrealistic. Sure, sixty-year old men can and do fall for younger women, but they're usually adult women with whom they share common interests and values and viewpoints ... not neurotic, immature near-underage girls. Of course there are exceptions, and they come close to being called pedophiles! Sorry RGV, but it's not credible that a sane and accomplished sexagenarian would throw away a comfortable family life and become a joke to his peers ... all for an 18-yr old that doesn't have a practical thought in her head and that behaves like an unstable escapee from a mental institution. You don't have to have a PhD in Psychology to see that Amitabh's character is seduced by sex, and that the young woman has unresolved abandonment and daddy issues.
As for the recurring scene of Vijay perched on the edge of a cliff, contemplating suicide, that's about as close as he comes to having anything in common with Jiah, by behaving like a smitten teenage boy.
On a positive note: the actors did a good job, and cinematography good.