It's only natural that we desire to have more space for ourselves when we usually live with a partner. Ideally, that desire should be talked about and respected within the couple. This story stood out for me because it reflects a very specific issue that many couples go through.
Sometimes, when we are in a relationship, we think that if we bring up certain needs like the one mentioned above, the other person is going to take it personally and think we want out of the relationship. That is not always the case; sometimes it's true that we only need space for ourselves.
Maybe we're not ready for what that conversation might bring up, and that is completely valid. In a way, time for ourselves, if it's discussed and constrained by a set of rules, kinda loses its quality of freedom, and that might be what the man is looking for during his weekly escapades. But did it ever occur to him that she might need some free time too, and that she might be enjoying herself at the house when he leaves for his old apartment?
I honestly think discussing this would be much more freeing than sustaining the lie, although I understand it'll require bravery and the ability to confront a situation and possibly re-elaborate the couple's goals. Sometimes we interpret certain things as signs we should break up. I think that is not necessary, and we live in a time when two people can be in a relationship and choose not to live together.
If we're brave enough, we can enjoy the privileges of living in such a modern time that imposes far fewer rules on us than ever before.