Why won’t this girl leave me? she is Hot and Cold towards me?

I tell her to go and move on if she is clearly that unhappy with me , She is so hot and cold towards me , One minute she loves me and wants to be in my arms and wants me to fuck her brains out then the next minute she hates me and says vicious things towards me , so I give it right back to her to defend myself. I tell her straight out if she isn’t happy with me then she needs to leave , don’t string me along if you clearly don’t want to be with me anymore , I walk away from her and tell her to go find someone else but she keeps coming back to me and apologizes and says she is sorry and that she loves me and the. things between us seem to get better again but then all of a sudden she is angry with me again? Why is she doing this to me? Why is she getting off on hurting my feelings? What is she trying to get from me? if she clearly isn’t that happy with me and likes to pick fights with me over dumb shit , I stand my ground to her and tell her to go if she is not that happy with me , I am nothing but honest with her and I tell her if she doesn’t want to stand by my side I am not going to stand by hers. Should I find someone else and tell her to go Fuck herself? At times I feel maybe I should do that but I don’t cuz I am not a cheater and I don’t hate her I just don’t understand why she can’t just accept me like I accept her
Why won’t this girl leave me? she is Hot and Cold towards me?
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