It sounds harsh, but we have all had our friendships strained by shared living situations. When you live with other people, it is a a delicate balancing act of compromise. If you have ever had a roommate that didn't carry their own weight, this story will resonate with you.
I (26F) have lived with my roommate (28F) for almost a year now. We were good friends before moving in together and have never had any serious issues up until this point.
For context: I have SUPER sensitive skin, always have. It would be easier for me to count the products I can use vs. the ones I can't. I have to use specific (and frankly expensive at times) products. If I use the wrong lotion/shampoo/laundry detergent etc. it causes my entire body to break out in itchy hives and welts.