Kyun! Ho Gaya Na...

Diya (Aishwarya Rai) is an intelligent university student with strong views on love and marriage. She spends much of her time at an orphanage in Coorg in Karnataka, helping her "Uncle" Raj Chauhan (Amitabh Bachchan) with the children living there. The story begins when Diya travels to Mumbai for her written exams. While there, she stays with her father's friend and meets their lighthearted, free-spirited son, Arjun (Vivek Oberoi). His views on love and life are completely different from hers. The pair start spending an increasing amount of time with each other, and throughout all their arguments and conversations, they soon fall in love. Diya is more open about professing her feelings, while Arjun is an introvert, being reluctant and preferring not to disclose his true intentions. Diya is left feeling heartbroken after he denies loving her and she leaves him.

Arjun travels to the orphanage in the hopes of reconciling with Diya and apologising to her. There, he realizes his true feelings for Diya and is eager to reveal his love for her. It is revealed that Diya is now planning to marry her childhood friend, Ishaan (Suniel Shetty). Diya and Arjun start spending more time together and once again rekindle their romance. It is later revealed that Ishaan is only just a friend of Diya's, and the fake marriage was a plan made up by Raj to teach Arjun the importance of always being true to love and following his heart. She then marries Arjun.

{{Cast listing|

• Amitabh Bachchan as Raj Chauhan, Diya's uncle
• Aishwarya Rai as Diya Malhotra
• Vivek Oberoi as Arjun Khanna
• Sunil Shetty as Ishaan Rajput
• Rohan Shah as Young Ishaan Rajput
• Dia Mirza as Preeti Jaiswal
• Om Puri as Mr. Amit Khanna
• Rati Agnihotri as Sulochana Khanna
• Kajal Aggarwal as Diya's sister
• Arjun Mathur as Sumi
• Tinnu Anand as Sandeep Malhotra
• Rahul Singh as Banna Dabas
• Jennifer Winget as Diya's friend
• Sheena Bajaj
• Gaurav Gera as Vinay Bhalla
• Ajit Ahuja as Manu Deo
• Anupama Kumar as Adoptive Parent

}}

Kyun! Ho Gaya Na... marked the acting debut of Kajal Aggarwal.{{cite news|title=Kajal Aggarwal: Not doing Bollywood just for the heck of it|url=https://www.mid-day.com/articles/kajal-aggarwal-not-doing-bollywood-just-for-the-heck-of-it/17051162|access-date=19 April 2018|work=Mid-Day|date=18 March 2016}} The movie started controversy when Rai's ex-boyfriend Salman Khan allegedly threatened her then-boyfriend Oberoi.

{{Infobox album

| name = Kyun! Ho Gaya Na...

| type = Album

| artist = Shankar–Ehsaan–Loy

| cover =

| alt =

| released =

| recorded =

| venue =

| studio =

| genre = Feature film soundtrack

| length =

| label =

| producer = Shankar–Ehsaan–Loy

| prev_title = Rudraksh

| prev_year = 2004

| next_title = Lakshya

| next_year = 2004

}}

{{tracklist

| all_music = Shankar–Ehsaan–Loy

| all_lyrics = Javed Akhtar

| extra_column = Artist(s)

| title1 = Pyar Mein Sau Uljhanne Hai

| extra1 = Shankar Mahadevan, Mahalaxmi Iyer, Sneha Pant, Vijay Prakash

| length1 = 5:29

| title2 = No No!

| extra2 = Chetan Shashital, Dominique Cerejo, Kunal Ganjawala, Loy Mendonsa, Shankar Mahadevan

| length2 = 4:03

| title3 = Aao Na

| extra3 = Sadhana Sargam, Shankar Mahadevan & Udit Narayan

| length3 = 6:33

| title4 = Main Hoon

| extra4 = Shaan, Sunidhi Chauhan

| length4 = 5:13

| title5 = Baat Samjha Karo

| extra5 = Amitabh Bachchan, Shankar Mahadevan, Javed Ali, Chetan Shashital

| length5 = 6:00

| title6 = Dheere Dheere

| extra6 = Shankar Mahadevan

| length6 = 5:37

}}

{{Album ratings

| rev1 = Bollywood Hungama

| rev1Score = {{rating|3.5|5}}{{cite web|last=Tuteja|first=Joginder|title=Kyun! Ho Gaya Na: Music Review|url=http://www.bollywoodhungama.com/movies/musicreview/7166/index.html|archive-url=https://web.archive.org/web/20090209102003/http://www.bollywoodhungama.com/movies/musicreview/7166/index.html|url-status=dead|archive-date=9 February 2009|website=Bollywood Hungama|access-date=20 June 2011}}

| rev2 = Rediff.com

| rev2Score = {{rating|4|5}}{{cite web|last=Verma|first=Sukanya|title=In the mood for romance?|url=http://www.rediff.com/movies/2004/jun/21kyun.htm|work=Rediff.com|access-date=20 June 2011}}

}}

{{Reflist}}

• {{IMDb title|0349703|Kyun! Ho Gaya Na...}}

Category:2004 films

Category:2000s Hindi-language films

Category:Indian romantic comedy films

Category:Films scored by Shankar–Ehsaan–Loy

Category:2004 directorial debut films

Category:Films directed by Samir Karnik

Category:2004 romantic comedy films

Category:Films produced by Boney Kapoor