Looking for a movie in which there is this girl who beats bad guys and rides bike.Can't remember the plot but in one of the end scenes a guy comes and asks the girl to join him(in killing business may be) but she refuses saying she has left the job.she kisses him and turns around to go away but after taking few steps she turns around and fires a bullet at him.GUY falls in the water pond but he escapes due to wearing bullet proof vest.In the final scene the guy again tries to convinces her but when she refuses again and walks away,he kills himself. Please help!