The law of chaos states that expectation and end-result are inversely proportional. This was never truer than in the case of John Apparao 40+. If you go without any expectations, you might even like the film. Probably, just probably, this might be the reason the second half seems as dull as ditchwater, as we build up our hopes based on the first half.
There have been quite a few films in the past that dealt with aged bachelors and old virgins - with 40-Year-Old Virgin coming immediately to mind. Even in Telugu, every now and then there is a new release with a geriatric bachelor ....