Junjo Romantica tells the tale of a guy who writes BL novels, and Sekai Ichi Hatsukoi starts out somewhat similarly: a man named Ritsu starts working as an editor at a shoujo manga publisher, and a man named Takano Masamune is the editor-in-chief. When Takano gives Ritsu a smooch, chaos ensues, and doubtless a lot of comedy as well.
Sounds like another fun comedy-- and as I recall, Junjo Romantica picked up quite a few male viewers who thought the show hilarious as well. Here's hoping for the same for Sekai Ichi Hatsukoi!
I just finished watching and reading this series and both follow extremely close. Yaoi is a new category I am checking out and Sekai Ichi Hatsukoi is now one of my favorites I love almost all the characters.