I'm not going to lie. Although I'm not a yandere, I have thought about a relationship built upon the idea of symbiosis. I am currently in a rather vulnerable position, for being codependent, and being protected by my partner would be amazing.
Basically, I view myself as being the more vulnerable in the relationship. Needing protection and guidance. I desire a relationship where I feel safer with my partner. All I really need is protection and affection. And my side of this, would be showing her a side of myself, I wouldn't show others. I want to be like an emotional support animal, to my partner.
There's much more I'd love to do for my partner, but there's not much I really can do, momentarily, due to my current state—other than treat her like my savior. I want to plan surprise picnics and stuff, and be treated to them as well.
I just want someone who can make me happy and I can make them happy. Someone who is as loyal as myself, so I don't have to fear losing her.
Anyway, that's just my views on this. I sorta figured a relationship with a yandere would be symbiotic anyway, so I never really thought about it much.
Roses are red, blood is too, chained in your basement, I want to be alone with you...