Here is the thing. Even when you love someone dearly, you need time away from them.
My father went from a 5 day workweek to a 4 day, with the free day being on a day my mother works. She was annoyed at it first, because " Don't you love me and want to spend time with me." After thinking about it she understands. She likes having time just to herself as well.
They love each other dearly, go on walks at the end of each workday, having weekends away with just to two of them.
Just having some time to charge up and not having to deal with anybodies shit.
My husband and I try to give each other "a day off" from each other every once in a while. We usually plan outings with friends or family while the other stays home. It's a win-win for us because we can still strengthen our other relationships while giving our partner space. My husband and I love each other dearly. He really is my best friend, but sometimes it's nice just having the house to myself and I know he feels the same.