My GF and I split the cost of our rent with the promise that she pays less and does the household instead. She only works 80%, I do 100%, thus we decided that I pay 60% and she 40% of the rent and she does the household instead.
This didn't work for many years and I am at my limit. Whenever possible I try to help her.
It began with her being overly eager. Like cleaning the toilet every 2 days and so on. My mistake was telling her that I just want to live in the house, it doesn't needs to be perfect.
It got worse over time and I'm doing more and more. This would be fine if I see that she tries to get stuff done too. But whenever I see her she's either reading/playing mobile games or exaggerating with cleaning useless stuff (great, you put chlorine in the bath for the 3rd time this week. We still have mud in the house and ants eating away our food).
On her free days she's either with her friends or playing her mobile games.
Talking with her doesn't help since she says she's too busy (which is partially true) and she gets really angry. Trying to point out about our agreement of splitting the costs in exchange for home maintenance gets her angry and she points out that I only care about money (which I do more than her. I'm from an average family and never got anything from my parents except beatings, she's from a poor family that threw away their money for fun. And that is why it was/is a poor family).
How can I get it into her head that I'm not willing to accept this situation any longer? The house looks horrible and I can not and will not waste my time and money for her to have fun at my expense.
I've added the "mental health" tag since she had a burn-out a few years ago and the situation basically worsened from that time on.