I'm not personally a fan of fucked up relationships, sorry. I've read things like Killing Stalking, yes, but do not consider it a romance in the least. My only ships in that series are Bum x Mental Health Facility and Sangwoo x Maximum Security Penitentiary For the Criminally Insane. I'll also add that fucked up relationships aren't just contained to yaoi. Yuri and heterosexual relationship stories are also full of problematic pairings ranging from eyebrow-raisers (a guy following the girl he likes "because he wants to know more about her" is STALKING, and groping her breasts is SEXUAL HARASSMENT) to downright disturbing (No, a mother getting sexually involved with her daughter is NOT romantic). And then there's the old "He raped me and now I LOVE him!" trope that many stories - including yaoi - are full of. I don't deny any of this, nor do I glorify it. But it is what is, and clearly there are enough people buying it or they wouldn't still be making it. But trying to kink-shame strangers on the internet for what they consume isn't helpful or kind. Person A complaining about person B being into yaoi when they go home and watch tentacle hentai is hypocritical. (No, I'm not saying that you specifically like tentacle porn, I'm saying different strokes for different folks and there's no need to be overly judgy about it).