It stars Suriya and Jyothika, while Bhoomika, Shriya Sharma, Sukanya, Vadivelu and Santhanam play supporting roles.

Six years later in Mumbai they have a five-year-old daughter Ishwarya and live happily in love as a married couple.

At the end of the diary, Gowtham writes a note: "If I have one wish, it would be to live with Ishwarya happily at least for one day."

Then, due to his uncle's last wish at death bed, Gowtham agrees to marry Kundavi.

Ishwarya realises that Gowtham and Kundavi are both are immensely in love and leading a very happy life.

However, unlike others, Kundavi has brought the girl her husband loved in order to make him happy.

As per the film's opening credits:[4] Reports emerged in August 2005 that Suriya and Jyothika would come together for a project titled Jillendru Oru Kadhal based on a real life story newcomer N.Krishna would direct it.

[11] The film opened across 207 screens worldwide on 8 September 2006, three days before the wedding of the lead pair Suriya and Jyothika.

[13][14] Critics primarily labelled the film as a disappointment as a result of the high levels of publicity it received prior to release.

The Hindu gave the film a negative review, claiming that "The most talked about movie of the year, Studio Green's Sillunu Oru Kadhal featuring Suriya and Jyotika, arrives only to disappoint", further stating, "it lacks a strong cohesive script to bind the elements".

[15] Lajjavathi of Kalki praised the acting of Surya, editing and cinematography and noted the romance between Surya and Jyothika had more depth than flashback love with Bhumika and panned Vadivelu's humor and concluded saying if you watch the movie without much expectation, you can enjoy it.

[16] Cinesouth wrote "The director N Krishna has done a great job of a realistic depiction of Surya and Jyotika's married life within their four walls.

[18] In 2017, the film was dubbed into Hindi as Mohabbat Ke Dushman by Goldmines Telefilms Pvt.