any yaoi mangas of a guy with blond hair + a guy with black hair, but the blond hair is th...

http://www.mangago.zone/read-manga/royal_fiance/
Royal Fiance is your typical yaoi manga. Great art tho!

http://www.mangago.zone/read-manga/hakui_no_shihaisha/
For some reason, the seme has black hair on the cover but he's blonde throughout the series xD warning : contains bdsm.

http://www.mangago.zone/read-manga/do_do_do_s_kyuu_kareshi/
Again, the seme has dark brown hair on the cover but blonde in the series. This manga is bases off an S&M theme :3

I hope you like them

*based

http://www.mangago.zone/read-manga/nee_sensei/

Calling (OOTSUKI MUI) (Yaoi) Manga