Responses
I think its "Ten years where i loved you the most"
http://www.mangago.zone/read-manga/10_years_where_i_loved_you_the_most/
Thanks
Yaoi manga where the uke was suffering bcz of an illness and he is coughing blood and the seme was two timing. The uke didn't tell the seme about his illness. The seme taught that uke was cheating with someone but he is actually uke's doctor. If im not mistaken they loved each other for 10 years . The uke is suffering bcz of seme. And i think it is a webtoon