She also said she wants to "cure" me from my perversions, but then again I'm not sure if it's manipulation or if deep down she's resisting the role I want to give her during normal conversations, but gives in during sex because it's simply too hot.
Well first, kinks aren't a "disease", though there are those who see it that way. There are people who see homosexuality as a "disease", too, but it isn't. It's just an orientation. It sounds to me like if your girlfriend finds it hot in bed, then into it too, and perhaps the struggle is that she's not willing to accept this part of herself. I can't tell you how that will turn out; she might embrace it, shun it, or sit on the fence forever, and really in the end what she decides about it is up to her. One suggestion is perhaps she would be okay with keeping the BDSM to the bedroom, and having a vanilla relationship otherwise; I don't know if that would work for you two but it is a suggestion for a compromise.

So maybe enjoy it while you can, in that case. Just always keep your eyes open, always pay attention to the situation around you and remember you can always re-evaluate. What worked yesterday may not work today and that's okay; just don't fall into the trap of "well I agreed to this so now I'm stuck." You can always change your mind.

Keep the lines of communication going; that way whatever happens is at least based on the truth.

I wish you good luck; I hope you are able to find happiness in your situation.