The issue with translating the yandere girlfriend fantasy into reality is the fact that beneath all the cutesy Japanese, otaku terminology and pretty faces is the fact that it's just a manic BPD crazy woman. I know that description doesn't do much to deter, I think as men we are just naturally drawn to crazy bitches for some goddamn reason, but you don't really understand what that means until you're in the thick of it.

The bottom line is "yanderes" (crazy BPD women) don't love you for who you are, they love the fantasy version of you they made up in their heads and if you were to actually date her, any amount of disappointment or flaw you expose of yourself will shatter that perfect image she has of you. And because they're manic, they'll become hyper-focused on trying to ruin your life, as usually they don't kill someone they want to love. They'll put all your personal information in a text document and spam it on every corner of the internet, they'll post CP with your face hyperrealistically edited into it, they'll claim you got them pregnant and will take shit to court, seriously. But they still don't hate you, they just say they do, because they always come back. Even if you try to part ways, even if you move and change your phone number, you'll still be getting drunk, cryptic texts from her. But even still, this isn't to get you back, it's to form you into the perfect version of you she made up. At that point you've just been pussywhipped.

Again, I know in a fantasy porno setting this is really hot, it really is, but in reality this shit sucks.
But if the question is would I date her AND she loved me totally for who I was, oh abso-fucking-lutely I would. I'd tell her who I want her to kill, I'll be like a mini Charles Manson.