Sweet 18 (2004)

Although Sweet 18 is a drama and My Little Bride is a movie, they are quite similar. Both involves arranged marriage between a high school kid and an older guy which their grandparents chose for them. They are both very cute as well.

both stories are about a married couple that don't get along... at first... :)

In both series the main characters need to marry because of an old betrothal made by their grandparents.

They both are about the marriage and relationship of an older man with an 18 year old girl.

Both have arranged marriages set up by grandfathers. The bride in Sweet 18 is also in high school and have traditional families.

The excitement of arranged married and how they overcome the differences like cat and dog.

Both are about and older guy marrying an 18 year old for his family, and then eventually falling in love.

Both have arranged marriages, the main characters are similar, and both series are generally lighthearted romcoms.

Relationship between a older guy and younger girl.

both feature Han Ji Hye and Lee Dong Gun as the main leads

They have the same lead actress for one; and a lot of the music, filming & characters tend to remind me of this drama - they are both, sweet, romantic & fun :P

GB reminds of Sweet18.

Similarities:
Older ML/ younger FL
Educated ML/ FL only has basic education
Hate to love relationship
In both series FL mainly dreams of being a good housewife
In both dramas the FL has the Father/Mother in law’s support

I enjoyed Sweet 18 more than GB. GB has some really good scenes but it also has annoying characters.

Following a failed confession to her first love, female high school student Mikoto Ochiai contemplates jumping off the roof of the school building. However, her thoughts are interrupted by the arrival of Jin Haiba, the physics teacher known for being a slacker and the butt of students' jokes. Calmly, he lights a cigarette and asks for an explanation of the events that led her to this precipice. Rather than dissuade her from killing herself, he makes a request—will she enter into a romance with him before she dies? Together, the two gradually ponder why they should keep living and why they should not love each other in earnest.

Both dramas deal with a couple getting married because of an arrangement and because the girl is head over heels for the guy. Though Wedding is more mature than than Sweet 18.

Even though these are two different stories, they both have an age gap between the main couple. In who are the girl is 20 and the guy is 31, and in Sweet 18 the girl is 18 while the guy is 28.