Two Faces of My Girlfriend

both were romantic comedy, both are too hilarious with a little bit drama in the middle

Both are romcom movies about an ordinary man falling for a woman with two/multiple sides to her. Two contrasting people seem to inhabit the same body. ML has to navigate his relationship to each one of them

Both are about multiple personality disorder. But instead of girl boy is the one who having split personality in Hyde, Jakyll, Me.

Both are romance stories about a man and a woman with dissociative identity disorder (previously known as Multiple Personality Disorder) falling in love.
The male lead has to navigate his relationships to each alter who have different and distinct personalities.