we each had our own rooms, his a study and garage woodworking and my room was for sewing and we had our own individual outdoor hobbies, his was cycling and mine was the allotment. It worked brilliantly well, obviously we overlapped, he would come to see the allotment and we would go on a cycle together etc as well as the usual couple things and holidays
Being able to be in our own spaces helped a great deal when the inevitable happened, as it does with every couple, not being joined at the hip 24/7 as some couple are