It was the fact that Shammi Kapoor and Mumtaz got attracted with each other after they had worked together in the film Brahmachari which was released in 1968. The duo's romantic song, Aaj kal tere mere pyar ke … was a big hit and their on-screen chemistry got popularized.
At that time Shammi Kapoor was a widower and he had lost his wife Geeta Bali a few years back in 1965 and he wanted to marry with Mumtaz after they worked together in Brahmachari.
Though Mumtaz liked Shammi Kapoor very much she hesitated because as an actress she wanted to achieve something in her filmy career. It was also too early for her to think about her marriage, at that time she was 17 years old and also Shammi Kapoor was 18 years older than Mumtaz and he was also the father of 2 children. But still Mumtaz wanted to marry him but she hesitated due to the rules of Kapoor family.
Mumtaz wanted to work in the films even after her marriage but it was against the rules of Kapoor family, there was a tradition in Kapoor family that daughters-in-law should not work in the films, this rule was enforced by the head of the Kapoor family, Prithviraj Kapoor and at that time they were strictly following that rule.
Even Raj Kapoor, the elder son of Prithviraj Kapoor was strictly following that rule. So due to that reason he didn't give the chance to Mumtaz to perform in the film Mera Naam Joker because that character was supposed to wear very short cloths and Raj Kapoor hesitated to cast Mumtaz even after her screen test due to her friendship with Shammi Kapoor as it would have led to complications. Mumtaz even assured Raj Kapoor that they (Shammi Kapoor & Mumtaz) are not getting married but Raj Kapoor had a fear that they may change their minds at any time. Mumtaz said that Raj Kapoor was not only conserned about the film but also taking into consideration about the image of the Kapoor family.
Once Shammi Kapoor was asked about his memories with Mumtaz, he said that at that time he was a widower and Mumtaz was a very pretty little girl and for a short period the duo had dreams and then it turned into a nightmare. Finally he added, ‘I'm happy as I'm today’.
Shammi Kapoor had passed away in 2011 at the age of 79 years. His first wife Geeta Bali had passed away in 1965 due to smallpox after they lived together just for 10 years as they got married in 1955, then he got married with Neila Devi Gohil in 1969 to take care of his small children.
Mumtaz is now 77 years old. She had a successful filmy career and she was one of the glamorous and the finest actresses of her time.
She got married in 1974 with a businessman Mayur Madhwani and the couple have 2 daughters, Nathasha and Tanya. Nagin was her last film which was released in 1976. After a long break Mumtaz appeared in the film Aandiyan in 1990.