You know, I really hate sharing a room.
Really? Why do you hate sharing a room?
I just don't like it.
It's okay to not want to share a room. Depending on your circumstances, maybe you can try and find a room by yourself? This might be better for you and help avoid conflicts with roommates.
I should be more specific. I hate sharing a room with someone that I don't like.
That's more than fair. You shouldn't share a room with someone you don't like as it will likely cause conflict eventually. Talk to someone about getting your room changed if you can.