Just read this beautiful recently - http://www.mangago.zone/read-manga/blue_nathanael/
http://www.mangago.zone/read-manga/ame_nimo_mayuwanai/
See the last page (55.) too!!
I cried like a baby at this: http://www.mangago.zone/read-manga/the_specific_heat_capacity_of_love/
I had to be tough not to cry at every chapter: http://www.mangago.zone/read-manga/500_nen_no_itonami/
Totally agree with http://www.mangago.zone/read-manga/500_nen_no_itonami/ each chapter i just cried and cried. This also good manga for me to dry your tear
http://www.mangago.
well not quite cry (the only time i've ever cried reading a manga was when i read all of natsume yuujinchou in one sitting and I think that's impossible NOT to cry wwww) but there's a couple that have broken my heart
http://www.mangago.zone/read-manga/hana_no_miyako_de/
http://www.mangago.zone/read-manga/kanemochi_kun_to_binbou_kun/
http://www.mangago.zone/read-manga/touch_me_again/ (ch 6)
i don't trust bl with old guys now i'm always waiting for something sad to happen (  ̄^ ̄||)

was there any kind of yaoi manga with heart-breaking scenes that made you cry?