The Time We Were Not in Love (2015)

I think that 20th Century Boy and Girl has the same over all feeling/vibe that The Time We Were Not in Love has. They both have similar themes of a romance between two childhood friends that isn't realized until their 30's. Both are quite light hearted.

Childhood friends-to lovers with the ml falling first for the fl. Bickering, misunderstandings and living close to each other tropes.

The Time We Were Not In Love, is a Korean remake of the famous Taiwanese drama "In Time with You", so naturally, all three of them: She's The One, The Time We Were Not In Love and In Time With You have all the same "Bestfriends turned lovers" theme...

Both main leads are long-time friends, however in OMHE they lost in touch but reunited in the end. Both great rom-com, handsome strong male lead yet very charming and lovable. Female lead is strong yet damsel-in-distress like.

Two people who know each other and fall for each other but have to go through numerous trials to work out that they are indeed meant for each other.

Both of the drama share the same plot, leads start as friends until one of them starting to develop feelings. The only difference are the personalities of the characters in each drama as well as their age as it plays a major factor to the time we were not love drama.

Choi Won is "the perfect guy" - good-looking, tall and fit with an amicable personality. Although he is very popular with women, he can't have a proper relationship because of his friend, Oh Ha Na. A romantic comedy about a man and a woman who have been best friends for 20 years (7000 days). They turn 34 and make a pact to be married before 35, and race each other to the altar while “helping” weed out potential suitors. They find that they're constantly dissatisfied with each other’s boyfriends and girlfriends, because they've really been in love all this time.

It remind me of this drama with similar story line of group of adults who got friends opposite sex & they all try overcome obstacles & hardship in their friendship. Starring famous Japanese actor & actresses.

Both deal about childhood friends that love each other. In both dramas Lee Jin Hook plays the male lead, the pair is 30+, lives next to each other and tries to solve their problems with their feelings and the extra guys/girls of their friend.
Main difference: I need Romance 2 the pair already dated.

Best friends, that grow up together realize as an adult that they mean more to one another. In both dramas the male lead realizes his feelings first and the female lead slowly realizes them too. Cute dramas about a similar topic.

Korean adaptation of the same story. Korean adaptation of the same story. Korean adaptation of the same story

The mini movie takes place where 'In Time With You' left off. Cheng You Qing reflects on her relationship with Li Da Ren, from friends to couple. Like any other husband and wife they fight, and make up… and they’re fighting now. So You Qing goes to Singapore on her own.

The web series is a Singapore tourism special that uses the drama 'In Time With You' as its backdrop

both stories contain long time friends almost lovers kind of plot. The leads know each other more than anyone, and treat themselves as even more than family, however there are several reasons as to why they still hesitate on being together. both also tackle adult life and personal career issues.

Both titles are heartfelt romances between childhood friends. The main characters are in their 30s in both dramas. The interactions between the leads are both funny and endearing, and hit you right in the feels.

Housewife Miyazawa Tomomi, her husband out of a job, loses her treasured home as her family is forced to do with less during the recession. Her one ray of sunshine is her upcoming middle school class reunion, where she hopes to meet old friends as well as old flames. The class reunion, however, turns out to be more of turning point not only for her but for the others as well. At the party, she reunite with her old friends Sugiyama Kosuke, Nishikawa Yoko, Okubo Shinichi. Just how will these four people's lives change after their class reunion...