tear jerking yaoi manga

I have list but it's not all happy ending and some depend on how readers to interpret the ending.
If you wanna check it out.
http://www.mangago.me/home/mangalist/215/

I was a bit teary
http://www.mangago.me/read-manga/koi_to_wa_yobenai/
^^

This! The art is a bit on the bara side. Don't be put off by that. The story is perfection and just what you're looking for:

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

You can choose the tragic ones from here, by genre. http://www.mangago.me/home/mangalist/57857/
I have also marked the one having tragic end. So You can easily avoid reading those.