Prem Kahani (1975)

Rajesh is in love with Kamini in their college days. But he chooses to become a revolutionary freedom fighter and abandons Kamini due to the fear that he might die during his struggle leaving her as a widow. The vicissitude of time, however, gets Kamini married to Dheeraj Kumar, a police inspector, and also a friend of Rajesh. Rajesh takes refuge at Dheeraj's government quarters and encounters his past as he meets Kamini again. Eventually, Dheeraj finds out about their past relationship. He is encountered with the challenge of believing the chastity of his marriage or the doubt in his mind whether his trust has been broken while he was away from home on duty.