
It's a little older, but the couple in it are really amazing and long term. Haru wo Daite Ita. There is even a sequel and an OVA made http://www.mangago.zone/read-manga/haru_wo_daite_ita/

Probably you have already read them, but.... i've got some that might interest you....
Lie Cry Like (Yaoi) manga - Mangago
http://www.mangago.zone/read-manga/lie_cry_like/
Kekkon Suru Kamoshirenai Otoko (Yaoi) manga - Mangago
http://www.mangago.zone/read-manga/kekkon_suru_kamoshirenai_otoko/
http://www.mangago.zone/read-manga/bokura_ga_koi_wo_ushinau_riyuu/
Hitotsu Shikanai Mono (Yaoi) manga - Mangago
http://www.mangago.zone/read-manga/hitotsu_shikanai_mono/
Hope you like it!
Man, another yaoi where rape is normal... *sigh* I hate rape, why can't I find yaoi with lovers who love and respect each other ????