Kadhal Kottai is a 1996 Tamil romance film directed by Agathiyan, in which Ajith Kumar and Devayani play lead roles, apart from Heera Rajgopal, Thalaivasal Vijay, and Karan who played important roles.
Kamali Devayani lives with her sister and brotherinlaw in Ooty and is searching for a job. While in Madras, her purse is stolen and she fears she has lost her university certificates. Surya Ajith Kumar who works in Jaipur finds the purse and sends it back to her, and a love develops through letters and phone calls. They agree to love each other without meeting, and Surya eventually moves to Madras for work. However Kamalis brotherinlaw is pressuring her to marry a suitable man and Suryas boss keeps trying to seduce him. Eventually, Kamali and Surya unite through a run of coincidences.The basic theme of the film was inspired from Puranaanooru literature on the relationship between King Kopperum Chozhan and poet Pisirandhaiyar, though they never met but they developed a strong relationship until their deaths. Agathiyan confirmed this in his interviews. Agathiyan initially wanted to make his directorial debut with this subject since no producer were willing to produce the film, he made few films and earned his breakthrough with Vaanmathi. Post its success, he chosen Ajith, actor from that film to play the leading role with Sivasakthi Pandian agreeing to produce the film. ........
Source: Wikipedia