bl stories with depressed/suicidal boyfriends
how about this one?
http://www.mangago.me/read-manga/geinaru_tadaima_ire_kawarichuu/?av=2
to the point where it’s psychopathic, semes with persistent clinginess and overbearing jealousy.. basically a possessive stalker lover?
would love some manga suggestions with semes like that!
The word you're looking for is yandere...try this tag search
http://www.mangago.me/tag/yandere+seme/
Something along the lines of Stalker's Game maybe???
http://www.mangago.me/read-manga/stalker_s_game/

I would typically go through the process of checking my bookmarked chapters and go from there but there must be a way to just continue from the last chapter.