An anime series has just started based on the Lovely Complex manga. As of this writing only the first episode has been fansubbed.
My previous entry discussed the live action movie, the anime follows the same premise, though it will likely be able to tell the story in more detail as it won't be crammed into the limited length of a movie.
Information
Media
Lovely Complex - OP (Hosted Locally)
Availability
Image Details
Screen shot from the opening sequence for the Lovely Complex anime series.