Kadhalar Dhinam

Kadhalar Dhinam (/kɑːðələr ðinəm/ transl. Lovers' day) is a 1999 Indian Tamil-language romance film written and directed by Kathir. Produced by A. M. Rathnam od Sri Surya Movies, the film stars Kunal and Sonali Bendre in the lead roles, while Nassar, Manivannan, Goundamani and Chinni Jayanth play supporting roles. The film follows two youngsters whose romance begins through an internet chatroom but is threatened when the male has second thoughts after discovering his lover's true identity.

Kadhalar Dhinam is the debut film for Kunal and the first Tamil film for Bendre. It features music composed by A. R. Rahman with cinematography by P. C. Sreeram and editing by B. Lenin and V. T. Vijayan. The film was released on 9 July 1999 and was also dubbed in Telugu as Premikula Roju, which was released simultaneously. The film received positive reviews and was a commercial success. A simultaneous partially reshot but mostly dubbed Hindi version, Dil Hi Dil Mein, was later released on 21 April 2000.