Nahar from all indication is a very religious person. He always said he wanted Saloni as his wife in his next births. So, I assume he believes in reincarnation. So, how can he Commit Suicide - by his action he would have doomed himself for all eternity.
So, I did some research to understand the Hindu view of suicide...........
Hinduism and suicide:Hindu view on suicide
By www. hinduwebsite.com
Hinduism and suicide: Hindu view on suicide
Hinduism does not approve suicide. Hindus believe that human life is very precious, which is attainted after after hundreds and thousands of births and provides an unique opportunity to each individual to make a quantum jump into higher planes of existence or attain immortality. Even gods and other celestial beings do not have this opportunity unless they come down to earth and take birth as human beings.
It would therefore be a very serious mistake on the part of an individual if he commits suicide. It would seriously hamper his spiritual progress and put him back on the evolutionary scale by a few lives behind. It would also expose him to the risk of redoing in a more arduous way what he wanted to avoid in the first place.
According to Hindu beliefs if a person commits suicide, he neither goes to the hell nor the heaven, but remains in the earth consciousness as a bad spirit and wanders aimlessly till he completes his actual and allotted life time. Thereafter he goes to hell and suffers more severely. In the end he returns to the earth again to complete his previous karma and start from there once again. Suicide puts an individual's spiritual clock in reverse . Hindu scriptures therefore aptly described it as murder of self (atmahatya).
http://www.experiencefestival.com/a/Hinduismand_suicide/id/54147