Kuch Kuch Hota Hai was still a love triangle between Rahul, Anjali & Tina. Just that it was Anjali & Tina who fall in love with each other in college.
It is Rahul who dies post child birth but has long realised that Anjali was Tina's true love. Due to the fear of the society, Anjali leaves Tina & goes back to her hometown. Shattered Tina eventually marries Rahul. Now Rahul is the one who has written all the letters to his child asking her to ensure Tina & Anjali get back together.
On the other end, Anjali due to family pressure has finally agreed to marry Aman. In the end, Aman sacrifices Anjali so that she can marry Tina.
Written, Produced & Directed by Karan Johar.