I've never read Yaoi mangas but i've seen manga images that might sound good. I only know two though.
Junjou Romantica
Sekai Ichi Hatsukoi.
They are both from the same writer. I dunno if you want hardcore or soft yaoi but that's all I really know.
i suggest you read manga created by sakuraga mei if you haven't already read it. they're really good, the art, all bishounen and all. and maybe read some stories created by minami haruka. there are some cute characters in her manga. and of course there's those really popular anime, which i'm sure you must've watched already, and i really like this anime,kuroko no basuke, although its not yaoi, but there are lots of yaoi fanfics on this anime.