Both involve:
+ older, more disillusioned FL with a younger, sweet ML
+ ML is head-over-heels in love and devoted
+ both have travel/vacation as a theme
+ terminal illness as a major theme (for the FL in SoaW, for the ML in CHFiL)

Scent of a Woman is a full-length kdrama with more serious, melodrama themes while Can't Help Falling in Love is a Filipino romantic comedy movie with a lighter tone.

Both involve:

+ a rushed wedding under unique circumstances
+ ML enters the marriage consciously because he loves the FL while the FL enters the marriage for a different reason (illness in Love Now and inebriation in CHFiL)
+ the ML is a sweet character, younger than the FL
+ ML is head-over-heels in love, has loved the FL for a long time
+ both have a beach setting and travel/vacation as a theme
+ terminal illness as a major theme

Love, Now is a long-form Taiwanese drama while Can't Help Falling in Love is a Filipino movie

Both are light-hearted romcoms with a similar premise and tone.

+ the ML has a weakness to which the FL is his only cure/exception
+ rich/popular ML with a poor/hardworking FL
+ ML falls first and chases first
+ ML is sweet and a bit awkward, not as cold/arrogant as the usual rich MLs

Sm:)e is longer and has more depth. It focuses on the entertainment industry and both leads are actors, while in LMiTD only the SML is an actor while the ML is a CEO businessman.

The two shows have a similar odd premise...
+ one of the leads has a supernatural affliction that makes them transform when they come into contact with another person
+ the other lead's kiss is the "cure" to this affliction, and the transformed lead tries to seek skinship or close contact with them to fix their problem
+ both are fluffy romcoms set partly in the workplace

In AGDtBaD, the FL transforms into a dog after she accidentally kisses the ML. She has to kiss him again to reverse the process.
In LMiTD, the ML transforms into another person when someone touches him for more than 5 seconds. He has to kiss the FL in order to transform back into himself.

Differences:
- AGDtBaD is a full length kdrama while LMiTD is a mini-series cdrama
- ML falls first and chases first in LMiTD, reversed in AGDtBaD

Both are thrillers with romance as a heavy theme.

+ strong, anti-hero MLs with a murderous, vengeful side when provoked
+ warm but headstrong and emotionally intelligent FLs
+ the person who raised the FL (her father in W, older brother in TSHLYE) has a very complicated antagonistic relationship with the ML
+ intense plot, both had me on the edge of my seat at times and gasping

W has a fantasy/transmigration element while TSHLYE leans more into the mystery/crime genre.

Similar in tone and both are easily watchable, light-hearted fantasy historical rom-coms.

In both dramas, one lead needs the other to fall in love so that they can extract an important artifact/substance from their bodies. In TPatW, the ML has to get a pearl from the FL through true love's kiss. In SoL, the FL needs to get a love-dependent fragrance from the ML.

other similarities...
+ human x non-human romance
+ ML falls first and is totally smitten
+ very sweet, devoted, puppy love ML
+ FL is the more dominant one in the relationship, makes the decisions
+ one lead holds the other captive in their home

Similar themes in these dramas, they are both modern era romance melodramas concerning rich people, business inheritance, and family politics. In both:

+ FL is betrayed by the people she trusts most, including her cheating fiance/husband
+ FL is an heiress to a wealthy company
+ ML helps the FL get revenge on the people who wronged her
+ ML is totally smitten, falls first and confesses first
+ The plot is largely about avenging the wrongs against the FL and getting justice
+ FL is often in need of rescue but is also trying to become stronger and defend herself

Forever Love is shorter than PMR and less complicated. PMR has a time travel aspect also.

Same actors as leads. Similar themes:

+ ML falls first and chases first
+ leads had a fateful childhood/past encounter
+ ML recognizes FL but she thinks the SML was the one she met in the past
+ steamy, lots of kisses, ML is very aggressive in pursuing FL
+ SML turns out to be evil (cw for attempted assault)
+ FL is betrayed by the woman she trusts most

Maid's Revenge takes place in the Republican era while Forever Love is modern.

+ leads met in high school first
+ they were academic rivals and had a bickering relationship
+ ML was in love with FL in high school but hiding it
+ they meet again as working professionals
+ as adults, ML is well off while the FL is hardworking but poor
+ ML chases first
+ leads maintain a bickering but cute relationship as adults

+ Leads meet as children and are friends/sweethearts
+ misunderstanding ensues and they separate
+ leads meet again in an antagonistic way as adults
+ ML originally wants to take revenge against FL but ends up falling for her all over again and chasing her first
+ rich but sensitive ML, poor but strong FL
+ similar kind of jealous childish ML character
+ both have love triangle around the FL iirc

Both are romance dramas set in high school.

+ love triangles with intense rivalry between ML and SML
+ second lead syndrome
+ tragic friends-to-enemies backstory (btw FL and ML in OS, btw ML & SML in TB)
+ FL is a more reserved character who doesn't want attention

Both are mini-series that take place in high school and follow a low-key FL who is more an avenue to explore the ML and SML's characters than a strong character in her own right.

+ love triangle, both ML and SML fall first
+ both ML and SML help/protect the FL in various situations
+ intense rivalry between MLs; one is known as a troublemaker while the other is more reserved and laid back

Orange Soda has a more serious tone while Best Mistake stays light and surface-level.