Update:
I failed on not doing things I would do- I freaked out when I got home over dishes- I told him I feel like we're married still - if he wants to be more like roommates he had to do his share of the dishes - when I lived with a room mate leaving dishes like this would not be tolerated. So after some yelling he did them.

We fought more then I locked myself in my room and he went to his. Later on after cooling down he admits that he partly has his doubts about what he's doing but he still feels like he needs to be on his own - since he never had the opportunity to do that before. So I'm not sure if I continue to do my own thing and give him space for a while if there's still chance.