Yup in fiction yandere and tsundere (violent/abusive kind) might be okay, but irl it's a no-no. You need run away from a yandere and smack/ignore the tsundere.
Srsly, if not for adorable handsome clingy crybaby tall lustrous blue-haired Nine, I would definitely go for Yuri route, and by "Yuri," well, you know what I mean 😆.