Recommendations

In both dramas the FL ends up in another girl's body, married/engaged to the original girl's husband/fiancée. The main couple are antagonistic at first but later fall in love.

Both are short dramas in which the FL is living in a different girl's body.
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Both are short mostly fluffy romance dramas in which a girl takes over the body of another girl and falls for the original girl's fiancée.

they are both south Korean reality shows about LGBTQ community!
while Merry Queer focuses on their struggles, Man's romance is a dating show for gay men which is totally a first in Asian dating show history!! ?? make sure to check this one out too :)

They work in the same company and meets in secret. I think energy is similar, she is rather shy and he focus on work. They develop together new field of feelings.

Bercerita tentang keluarga, tetangga, sahabat, dan teman masa kecil. Drama ini menceritakan perkembangan dan pertumbuhan anak-anak yang berada di lingkungan yang sama tumbuh bersama masalah keluarga mereka, impian dan masa muda mereka

They're both Thai bls with Ohm and Fluke being the main leads in both series!
Close Friend 2 is nothing special but pretty enjoyable if you know how to enjoy.

Both series have Ohmfluke as one of the couples!
Though in Close Friend season 1, every episode is about a different couple.

The female lead has a child, she was married and got cheated. The male lead is younger than the female lead.

Older Woman/Younger Man romance. The female lead is strong and the male lead is bright person. The male leads return from abroad in both. The male lead loves the female lead since childhood. Both female leads work in office (male lead as well but not in the same office), side characters are supportive.

Older Woman/Younger Man romance. The male lead is nice person and the female is strong and nice; male chases the female first; in both dramas, the ML and the FL work in office (office romance); main leads are neighbors , they live in the same apartment buildings.

Older woman/Younger Man romance, The female lead is strong in both. The male leads return from abroad only for the FL, both male leads love the female leads since childhood. Male lead chases the Female lead first. The side characters are supportive and funny.

Both have similar vibes about revenge though the premises are different.
Black revenge deals with scandals and in media however Fukushuu no Miboujin is setup in corporate IT Company office.
Both are good to watch.

Both have similar theme. In both the series FL has hidden identity and seek revenge.
Will update soon.

Intricate revenge plot with lots of twists plus smart ML who resembles Na Yi Je! The mind games are mind blowing and well executed.