Responses
http://www.mangago.me/read-manga/nan_hao_shang_feng/ ongoing but funny as hell
http://www.mangago.me/read-manga/twenty_twenty/ I loved this but it hasn't been updated since forever
http://www.mangago.me/read-manga/18_unlimited/ haven't read this but they say it's pretty similar to 19 days
So recommend me shounen ai like 19 days