You need to have your own space. It is difficult for an adult to move back in with family under the best of conditions. I remember moving back in with my parents when hubby got out of the service. They insisted on it in fact. But while I lived in their house under their roof the balance had changed. I felt like I was treated like a 12 year old. I thought that I would be better with my own adult children, but there were issues when my daughter came home from college for the summer and on holidays. She was used to living on her own, coming and going when and where she pleased. When she moved back in, she was expected to follow the house rules. Where are you going, who are you going to be with, and when will you be coming home.

My point is no matter how much you love someone, living together brings out the worst in you both. Little things are blown out of proportion because you both feel that your living space is violated. IMO living with a stranger is actually easier than living with a family member. You use your company behavior with a stranger, but most people do not feel the need to behave that way with their own family.

Living on your own will restore the balance in your relationship and perhaps once the shock is over, allow your relationship to heal.