Junjou Romantica, Sensitive Pornograph, Fish in the Trap, the "Virgin Love" series, Hey! Class President, Koisuru Boukun, Ai no Kotonaba, Junjou. Also Pink Butterfly, Sweet and Bitter. And Himitsu no Kemonotachi.
In order:
Junjou Romantica
Sekai-Ichi Hatsukoi
The 4th Guard + (Cats and Dogs / Gattnedou Tenmatsuki) [related series]
Happy Yarou Wedding + all the series related that follow
Keep Out
Kishidou Club
Under Grand Hotel
Umaimon Kuwasero
Hana to Ryuu
Acid Flower
From 701 Gousitsu
Hakui no Shihaisha
Heart Strings
*Okane Ga Nai (no money) "it's like a guilty pleasure you hope nobody finds out seriously!"
*Junjo Romantica (Best Yaoi manga!)
*Winter Cicada (best story i read so far i recomended to any yaoi fan a most!)
*Kyou Kara Mao (super cute) ..>_<"
*Uragiri wa Boku no Namae wo Shitteiru (Betrayal knows my name) it really gets under your skin! at first it starts slow and looks sorta dull, but after a while you find yourself having a connection with the story and the caracters that's very personal ^_^ a very special manga 4 me.