super lovers
Honto Yajuu
Love Stage!!
Genwaku no Kodo (may need to read a couple of times as the early chapters can be confusing - because it's a mystery manga too - but pretty damn good)
Ze and Sex Pistols ... although they are grittier than Junjou et al.
http://www.mangago.me/read-manga/kusatta_kyoushi_no_houteishiki/ is a yaoi classic! I've lost count of the volumes ... and there are related series, too.
I'm in the process of compiling a list of interrelated yaoi manga, which are not the same as serialized manga: http://www.mangago.me/home/mangalist/11374/
I know that others have been compiling lists of long-form manga. Miyamoto Kano has a few like that (with Calling and Rules, for example), but I think her work is mostly completed.
Ten count or takarai rihito's manga
Finder Series by yamane ayano.. super super super SUPERB
The Warui Series! <3
1st volume: Warui Koto Shitai
I need some ongoing yaoi manga to read besides Sekaiichi Hatsukoi and Junjou Romantica.thx