does anyone know good yaoi where there is a young guy and a visibly older middle aged) guy...

http://www.mangago.me/read-manga/yamada_to_shounen/
I wouldn't say that the older guy is middle aged, but is like 10 years older.
And to me is a good yaoi manga, if you're interested check it out.

http://www.mangago.me/read-manga/on_or_off/

http://www.mangago.me/read-manga/joou_to_shitateya/

http://www.mangago.me/read-manga/how_sweet_is_a_sugar_daddy/?av=1

http://www.mangago.me/read-manga/unfather/

http://www.mangago.me/read-manga/bokura_ga_koi_wo_ushinau_riyuu/

http://www.mangago.me/read-manga/i_episode_0/

http://www.mangago.me/read-manga/joou_to_shitateya/

http://www.mangago.me/read-manga/himono_tokodoki_shanairen_ai/

15 year age gap. My favorite. http://www.mangago.me/read-manga/kokoro_kanda_neko/

Thank you everyone! (⌒▽⌒)