Jab We Met

Jab We Met is a 2007 Bollywood romantic comedy movie starring Shahid Kapoor as Aditya (a depressed businessman who is trying to get over heartbreak) and Kareena Kapoor as Geet (a Genki Girl planning to elope with her boyfriend Anshuman) who meet on a train going from Mumbai to Delhi. At first, Aditya finds Geet's chattyness very irritating and gets off the train. She attempts to get him back on but they both end up missing the train. They begin a long journey north, attempting to reunite Geet back with her family in Punjab, and then to reunite Geet to her boyfriend further north.

Tropes used in Jab We Met include:

Accidental Marriage: when he returns Geet to her family the second time, it slowly dawns to Aditya (and eventually Geet and Anshuman) that their reception is actually doubling as wedding preparatives for Geet and Aditya.
Broken Bird: Geet, after her eloping plans blows in her face. When Adithya finds her, she is a moping shadow of her former self.
Can't Spit It Out: Aditya can't confess his feelings for Geet. Meanwhile, Geet realizes that not being able to tell her mother about her relationship with Anshuman despite having ample oportunity to do so was the first hint of her not loving him anymore
Didn't Think This Through: Geeta's eloping "plan" basically consist on presenting herself at her boyfriend's family house and introducing herself as his fiancee, fully expecting that he backs up her, and, once the ceremony is done, introduce him to her family to strongarm them into accepting a son-in-law from a different religion. That, without even having talked to her boyfriend about her intentions to elope with him. Note that she reveals the latter part to Adithya as he is dropping her at her boyfriend's door, just after escaping from her family house (and an Arranged Marriage)in a way that ensured that she would be perceived as dishonored if she even came back.
Disposable Fiance: The Unlucky Childhood Friend Geet's family wanted her to marry. Anshuman, in the end
Driven to Suicide: Aditya at the beggining.
Everyone Can See It: Geet's family (first her grandpa and then the rest) is convinced that she and Aditya are in love. They are actually Just Friends the first time they see them, but escaping together in the middle of the night (even if it was to help her reunite with her actual lover) can give anyone that impression. During the credits,there is an time-skip of Geet and Aditya, having been married long enough to produce children, visiting the grandpa on his death bed, and the old man says that he realized what was happening between them even if they themselves couldn't see it at the time.
Genki Girl: Geet
I Did What I Had to Do: how Anshuman justifies to Aditya his ditching of Geet
I Want My Beloved to Be Happy: Aditya towards Geet and Anshuman.
Ironic Echo: Geet set-ups Aditya to fake a passionate embrace in a place she knows her arranged fiancee will see them in an attempt to make him ditch her on his own volition (the fiancee does see them, but they escape before the engagement is fully break up). Later, she uses the same scheme (in the same place, even) to confess -for real- her love to Aditya and ditch Anshuman for good
Love Epiphany: Geet has one near the end when she realizes that letting Aditya leave gives her the same feel of loss she had when she lost a train for the very first time on her life
Manic Pixie Dream Girl: Geet's character helps Aditya get over his problems and establish a positive attitude. He eventually returns the favor by helping her recover from her break-up.
No-Tell Motel: the place Aditya and Geet end after missing the train the second time. Only Aditya realizes it at the time. Geet doesn't get it even when turns out There Is Only One Bed.
Shotgun Wedding: the second half of the plot begins when Geet's relatives manage to track Aditya (who by that point hasn't seen her on almost a year) and appear on his workplace demanding to see her and to marry them both if they weren't already. Bonus point for being Punjabi Sikhs with actual shotguns.
Uptight Loves Wild: Aditya is the uptight one, Geet is the wild one.
Wrong Guy First: Anshuman.