My Boyfriend is Type B HangulB RRBhyeong namja chingu is a 2005 South Korean romantic comedy film. The basic premise of the film comes from the Japanese blood type theory of personality, which claims that a persons blood type can determine their personality traits. The heroine is type A conservative and introverted while her love interest is type B passionate and irresponsible.
On the opposite side of the spectrum is the beautiful Hami Han Jihye, a meek university student looking for true love, but never seeming to find it. As is typical in this kind of film, the two meet purely by chance Hami accidentally text messages Youngbin before literally bumping into him. Hami, feeling that their fortuitous meeting is a sign that they might be destined for one another, decides to pal around with Youngbin and see if theres any chemistry between them. Taken by Hamis sincerity and her willingness to pick up the check, Youngbin jumps at the opportunity.But Hamis cousin, Chaeyoung Shin Yi isnt quite so enraptured with Youngbin and tries to dissuade Hami from pursuing him. The thing is, Chaeyoung is a professional dating consultant and a strong subscriber to blood type theory. According to her, any relationship between the mismatched duo would be doomed to failure because Youngbin is a typeB male, which supposedly makes him arrogant, hardheaded, and generally a jerk, whereas Hami is a typeA female, one who supposedly cant help being timid and obedient. But while Chaeyoung predicts impending doom, the happy couple try to give love a shot, ignoring their supposed blood type incompatibility. ........
Source: Wikipedia