Bluffmaster! (2005) on Netflix

Plot summary

Roy Kapoor leads a double life. To his girlfriend Simmi Ahuja he is an honest man, while in reality he earns his living as a conman. When his true work is exposed on the day of their engagement, Simmi leaves him, and Roy starts drinking heavily. Six months later he meets Aditya 'Dittu' Srivastav and Jassi, amateur conmen who try to con him and fail. They turn their attention to a doctor, Dr. Bhalerao, instead, and Roy comes to the doctor's aid after Bhalerao is cheated. Dittu pleads with Roy to take him on as a pupil, and Roy, unwilling at first, agrees.