O Kadhal Kanmani (English: Oh Love, Apple of my Eye), also known as OK Kanmani, is a 2015 Indian Tamilromantic film written, directed and produced by Mani Ratnam. The film stars Dulquer Salmaan and Nithya Menenin the lead roles, portraying a young couple in a live-in relationship in Mumbai. Prakash Raj and Leela Samson play supporting roles as an older couple in the film, portraying the younger couple’s landlords. The film was said to be a “reflection of the modern mindset of urban India”, dealing with issues such as marriage and traditional values.
The film featured music composed by A. R. Rahman, cinematography by P. C. Sreeram and editing by Sreekar Prasad. Prior to the film’s release, the soundtrack was well received and the promotional activity of the film on social media, also garnered praise. O Kadhal Kanmani was released on 17 April 2015, alongside its Telugu version OK Bangaram, and won positive reviews from critics, praising the lead pair’s performances and the quality of the film’s technical aspects. The film went on to become a financial success at the box office, performing extremely well in multiplexes in India and overseas.