Re: Roommate ignoring my existence
I think saying "roommate ignoring my existence" is a bit dramatic, but here goes...
I have a roommate and I am a clean freak. I admit to being a clean freak. My roommate is not. So we keep our things separate and do not share dishes. The only appliances we both use are the stove, microwave, toaster and washer & dryer. She uses her own dishes and pots and pans and so do I. I do all of the cleaning of the kitchen and shared appliances because this is my place and I have found that she doesn't clean to my standards. I do become annoyed when I find crumbs, boiled over soup, chicken bones (!) on the counter and stove, etc., but I know she just doesn't mind or even notice what I consider to be a dirty mess, so it's best that I clean it. We clean our own dishes and pots & pans. I have accepted that we are different, so keeping things as separate as possible works best.
I think keeping things separate and not sharing dishes and appliances is the best way to go. You think your roommate is overreacting to "a small crust of cheese that is easily wipeable" while I would go ballistic if someone left any amount of old, dirty food on my sandwich press. You two simply have different standards of clean...so best to use your own things.
Also, accept that you and your roomate may never be buddies, but you two can coexist civilly if you agree to keep things separate.