Few of my favs:
http://www.mangago.me/read-manga/dear_green_hitomi_no_ounowa/
http://www.mangago.me/read-manga/komatta_toki_ni_wa_hoshi_ni_kike/
http://www.mangago.me/read-manga/canis/
http://www.mangago.me/read-manga/1001_nights/
http://www.mangago.me/read-manga/koisuru_boukun/
probably one of the most funniest u'll read : http://www.mangago.me/read-manga/okusan_no_mousouteki_nichijou/ please give it a try (≧∀≦)
oops komahoshii isn't yaoi it's shounen ai, and dear green they sort of don't show the scenes Σ(っ°Д °;)っ sorry!
You should totally read Silver Diamon! It's more like a shounen ai instead of yaoi, but the storyline is just... Sparkling. And it's completed too! (▰˘◡˘▰)
*Diamond
Recommendations for yaoi manga, with long chapters!
Please!