Devdas

Chandramukhi, the title character and Paro.

Devdas is a Bengali Romance novel by Sarat Chandra Chattopadhyay. Essentially, it is a retelling of the Krishna, Radha, and Meera myths, the relationships between its three protagonists - Devdas, Parvati, and Chandramukhi - paralleling the Hindu deities. The film is similar to the book The Sorrows of Young Werther. Devdas is part of a rich Bengali family who used to play with Childhood Sweetheart Paro. After Devdas comes back from England finishing his education, both Paro and he fall in love and Paro's mother deigns to inform Devdas's mother of arranging a marriage between them. Devdas's father disapproves because Paro comes from a middle class trader family and Devdas is too weak willed to stand up to him. Paro gets married to a much older wealthy widower and Devdas spends his days drunk and in mourning. He is introduced to a Courtesan Chandramukhi in Calcutta who falls in love with him. And so, Paro keeps thinking of Devdas, Devdas keeps thinking of Paro and drinking himself to death and Chandramukhi falls in love with a drunk Devdas who never responds to her love. And It Gets Worse.

The novella has been made into a film in many Indian languages, including Bengali, Hindi, Telugu, Tamil, and Assamese. The most notable adaptations include a 1955 film by Bimal Roy, a 2002 film by Sanjay Leela Bhansali starring Shah Rukh Khan as Devdas, Madhuri Dixit as Chandramukhi and Aishwarya Rai as Paro (all three pictured above) and Dev.D, a modern day and loosely-derived take of the novel set against contemporary Punjab and Delhi, where familial ties are negotiated by the traditions of patriarchy and marriages are reduced to a game of power and "honour".

Film adaptations:

Devdas (1928, silent film)
Devdas (1935, in Bengali)
Devdas (1936, in Hindi)
Devdas (1937, in Assamese)
Devadasu (1953, in Telugu and Tamil)
Devdas (1955, in Urdu, Pakistani film)
Devdas (1965, in Urdu)
Devadasu (1974, in Telugu)
Devdas (1979, in Bengali)
Devdas (1982, in Bengali, Bangladeshi film)
Devadas (1989, in Malayalam)
Devdas (2002, in Bengali)
Devdas (2002, in Hindi)
Dev.D (2009, in Hindi)
Devdas (2010, in Urdu, Pakistani film)
Devdas (2013, in Bengali, Bangladeshi film)

Tropes used in Devdas include:

All Love Is Unrequited - Obviously.
Arranged Marriage - The cause of all of Devdas's problems.
Betty and Veronica - Chandramukhi is Veronica, Paro is Betty.
- Its also been interpreted the other way around, with Chandramukhi as Betty and Paro as Veronica.
Byronic Hero - Devdas
Childhood Friend Romance (Unlucky) - Paro, who is his First Love.
Despair Event Horizon - Devdas crosses this after Paro's marriage.
Don't Make Me Take My Belt Off - Devdas's dad.
Downer Ending - Boy, is it a downer ending! Devdas dies and Paro is not even able to see his face because of the rules of Purdah.
- It's worse in the 2002 remake. The last four minutes of the film consists of Paro fleeing her mansion in a desperate attempt to reach a dying Devdas, tears streaming down her face, all the while being pursued by her in-laws. If you're not familiar with the story, you try to take some small comfort in that Paro will be there for him in his final moments. To make things worse, it's subtly implied that Devdas (who sees Paro running towards him) doesn't know if it's really her or if he's just hallucinating. So he dies, not really knowing for sure if she still loves him as much as he loved her.
Drowning My Sorrows - Why Devdas does not appear sober after Paro's marriage
Drinking Game - In-universe, A reason for Devdas's death
The Film of the Book - Several times.
Hooker with a Heart of Gold - Chandramukhi.
- High-Class Call Girl: What 'courtesan' can translate to.
Item number: In the version with Aishwarya Rai (Paro) and Madhuri Dixit (Chandramukhi), the "Dola Re Dola" number.
Karma Houdini - In the 2002 version, Devdas' sister-in-law Kumud. She's the one who reminds Devdas' mother (who was previously all right with the marriage proposal) of Paro's lower-class status, thereby ensuring Parental Marriage Veto. Later, she's shown plotting with her husband to steal the key to the family vault and run away with it all. Devdas catches them and decides that trying to set Kumud on fire would work better than, say, telling his mother about their plan (although to be fair, this is right after his father's death so he's even more unhinged). Of course, Kumud successfully convinces everyone that Devdas has gone insane, and as a result he's thrown out of the house. Later in the film, comments are made about the family's financial and social ruin, so it looks like they got away.
Love Hurts - And how!
Love Makes You Crazy - Or in the case of Devdas, dead
Love Triangle - Paro, Chandramukhi and Devdas.
My Girl Is Not a Slut - In the original novel, Devdas is initially disgusted with Chandramukhi for her profession, yet fascinated (and comforted) by her. He even marries her, but only after she gives up her profession to be with him, and he is always dogged by his feelings for Paro. It's very much a case of the Madonna-Whore Complex.
Sad Bollywood Wedding
Slap Slap Kiss - Paro and Devdas as children. It blossoms into Love.
Star-Crossed Lovers - Who do you think?
The Promise - On her wedding day, Devdas promises Paro that he will come to her doorstep one more time before he dies. Guess what happens at the end?
This Bed of Roses - Chandramukhi offers Devdas a place to stay at the brothel where she works.
Type Caste - A Reason Paro and Devdas are fated to be Star-Crossed Lovers.
What an Idiot! - Devdas. If he just stood up to his father, then Paro would not have been married to another.
"Well Done, Son" Guy - Reason Devdas spends half his screentime drunk.
You Can Barely Stand - Devdas when he crawls drunk to Paro's residence near the end.