Aap Aye Bahaar Ayee

Aap Aye Bahar Ayee is a 1971 Bollywood film produced, directed and written by Mohan Kumar. It stars Rajendra Kumar, Sadhana Shivdasani, Rajendranath and Prem Chopra. The films music is by Laxmikant Pyarelal.

Neena discovers that she is pregnant with Kumars child and tries to commit suicide. Rohit stops her from doing so and marries her in a nearby Shiv Mandir. Rohit brings up the child as his own son who is adored by all. Kumar, who is now a known criminal, comes to Rohit asking for money. While he and Rohit are having an argument, Rohit slips out the information that the child is not his. Kumar secretly records this information and blackmails him. One day he kidnaps Rohits son Rohit goes to his hideout to get his son back. During their fight, Rohit is badly injured, but then Neena comes and kills Kumar with one of with his own henchmans gun. Rohit, Neena and their son live happily ever after.

Source: Wikipedia