I didn't tell the full truth to my roommate about moving out

I told her 4 months ago that I was moving out because I'm thinking about moving to a different state. I put down a deposit and signed a lease to a short term alternative. After this, she told me I could do month to month at the place we're currently living in because she couldn't find a roommate and didn't want to live with a random person.

The full truth is I absolutely hate living with her entirely. I love her as a person outside of the apartment. Everytime we hangout it's so much fun, but I cannot possibly live with her. I feel so depressed being around her at home and I just want my own space. I'm only thinking about moving to a new state and want to live alone in my current city to see if I like it here and weigh my options.

My fear is that in 6 months time I'm gonna decide to stay here and she's gonna be upset that I didn't continue living with her. She's been telling all of our friends and coworkers that I'm moving to a new state in 6 months and that it was super sudden and that she's so confused about it. And it's just really weighing on me a lot and I'm not sure if I should clarify that I'm only thinking about it or what.