I Fell in Love) is a 2008 Indian Tamil-language romantic psychological thriller film written and directed by P. V. Prasath starring Nakul and Sunaina.

The doctor further attributes this behavior as unconditional love, which to some people makes them ignore reality and live in the past.

The climax of the movie shows Sabha committing suicide after killing Meera's uncle Kasirajan, who murdered her in order to gain her wealth.

The film marked the directorial debut of P. V. Prasath, who earlier assisted V. Sekhar, Vijay Milton and Azhagam Perumal.

[3] The film was shot at locations in Chennai, Ooty, Thalakkonam, Mudumalai, Pollachi, Valparai, Masinagudi, Gudalar, Udumalpet, Coimbatore and Kodaikanal.

PV Prasad started another project "Eppadi Manasukkul Vanthai" for he was held in cheating case and the film was finally released in 2012.

[10] Rediff wrote: "Kadhalil Vizhundhen achieves at least in part, what other love-stories fail to do -- to bring a genuine lump in your throat at times".

It also featured among a medley of Tamil songs performed by Shah Rukh Khan and Shriya Saran in the inaugural of the fourth edition of the Indian Premier League 2011 held at Chennai, India.