Low sex drive

Hailey
I'm not sure what is goin on with me. I very rarely initiate sex and I get upset with my fiancé when he trys to initiate it. It's not that I don't find him attractive. I wouldn't consider myself a feminist but for some reason I take that stance on sex regularly. Most of the time he is just trying to arouse my interest and I get offended as though he isn't supposed to touch me. 
The weirdest part is that I get aroused by the strangest things when he is away for the night and will pleasure myself. For some reason my hormones are blocking me from wanting him to be involved. Just for a little back story, he is very sweet and attentive and always makes sure I finish. Unless I say part way through that I won't be able to and tell him to just finish. 
Any advice out there?