I've never read Yaoi mangas but i've seen manga immagini that might sound good. I only know two though. Junjou Romantica Sekai Ichi Hatsukoi. They are both from the same writer. I dunno if te want hardcore o soft Yaoi but that's all I really know.
i suggest te read manga created da sakuraga mei if te haven't already read it. they're really good, the art, all bishounen and all. and maybe read some stories created da minami haruka. there are some cute characters in her manga. and of course there's those really popolare anime, which i'm sure te 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.