Bobby
The son of a wealthy industrialist, Raj falls in love with Bobby, the daughter of a Christian fisherman, but their contrasting positions in society – and opposition from their parents – act as a barrier to their love.
Starring Rishi Kapoor, Dimple Kapadia, Prem Nath, Durga Khote, Pran, Sonia Sahni, Aruna Irani, Prem Chopra, Farida Jalal, Piloo J. Wadia
Watch "Bobby" from streaming services Tubi TV, Plex Free released in 1973. It's a comedy and romance movie, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of movie, and is currently available to watch for free.