[Decolliber]

Actually, I think this is a fairly common phenomenon. Whenever my wife is doing housework (especially cleaning bathrooms), I always make sure I am doing something useful (vacuuming, lawn mowing, etc.). Women will tolerate a certain amount of real, temporal or just imaged imbalance in the division of labor, but will also store it up and use it against you if they think it goes on too long. Even if you do as much work as they do around the house, it seems unbalanced to them if you are not working when they are.
I am not sure why they think that way and we do not. Perhaps it is because they have more clearly defined ideas and expectations about "relationships" - sharing, partnership, fairness, empathy etc. You see the same thing with teenagers. A teenage girl will, when there is activity in the kitchen, ask if she can help. A teenage boy will sit and watch TV unless he gets yelled at to help. I guess it just the Mars-Venus thing: men are hardwired to be competitive; women are hardwired to be cooperators (and to expect cooperation from others).