rajesh khanna sharmila tagore and rajesh khanna both of them as a pair were looked upon with affection by the audiences easily were accepted as a romantic couple in the different musical hits they did together rajesh khanna played the role of an lonely unhappy married man who befriends a prostitude played by sharmila in amar prem khanna played the role of husband of sharmila who gets arrested in murder case and subsequently on the way to prison the police van meets with an accident and later circumstances forces him to marry another girl to give that girl s illegitimate child his name then aavishkaar saw them as a married couple who try their best to save their marriage tyaag saw khanna plays a boyfriend who convinces his girlfriend that since her father does not approve of the relationship they should not marry eachother public liked khanna s pairing with mumtaz and sharmila the most as a result there was a big rivalry between the two heroines this is the info i want to add hope now there is no copyright issue