Actually, Little Black Book contains the kernel of an idea that could have been developed into an effective melodrama. The problem is that director Nick Hurran and writers Melissa Carter and Elisa Bell see this as more of a sit-com. And, in a vain attempt to get laughs, they de-humanize their characters. When the good stuff comes (and there is a section of this film that's watchable), its impact is severely blunted, because we have trouble seeing the characters as being more substantial than foils for the filmmakers' failed attempts at humor.
See movie-reviewsfor full review.