Love virus) is a 2002 Indian Tamil-language romance film written, directed and produced by Kathir.

The film tells the story of a young director, trying to pursue his dream by overcoming all hurdles.

He gets a chance to go to Coonoor to write a script for a movie where he meets and falls in love with Geetha.

However the postman who is secretly in love with Geeta hides all the letters sent by Deepak, including the later changing his address.

It however turns out that Rajiv is from a wealthy family, but has chosen a hard life because of his passion to be a movie star.

Due to the tweaks, the actor originally roped in to play the hero of the movie has to be chucked out of his role.

He is completely broke and a pauper, but filled with happiness as he has made his lover's wish of making her husband a hero come true.

Geeta goes in search of Deepak, finally meets him in the theatre only to find him dead with a smile on his face.

A sequence in the film stars guest appearances from: Srikanth, then a model, was cast in the lead role and was coached acting skills by then-assistant directors such as Vetrimaaran and Mysskin.

[2] Srikanth was later dropped and Richard, previously a child actor, was selected to make his debut in the leading role.

[4][5] Her role was later handed to Sridevi Vijaykumar, who would make her Tamil debut as a leading heroine with the film.

[8] Malathi Rangarajan of The Hindu mentioned that "the screenplay is incoherent in parts" and that "the dialogue and expressions are sometimes too clichéd".

[10] Sify wrote, "Blame it on the avalanche of love stories hitting the screen in recent times that directors seem to have run out of ideas.

Kathir, the much hyped director wanted to try out something different with Kathal Virus, but has ended up in making an intolerable film".