The heart that knows to think) is a 1987 Indian Tamil-language romance film directed by Suresh and written by K. Dinakar.

Based on the novel Vaazhthum Nenjangal by Manian,[1] the film stars Mohan, Chandrasekhar and Rupini.

[2][3] Ilaiyaraaja's elder son Karthik Raja, then aged 13, played the keyboard for the song "Kannukkum".

[5] The Indian Express wrote, "The simple knot of the novel is overburdened with songs (especially), and fights.

[6] Jayamanmadhan of Kalki found Ilaiyaraaja's music as the only saving grace of the film.