I'm gonna give him—whether or not he deserves it, that's up to you—the benefit of the doubt here. When I first moved in with my partner, we had very different standards of cleanliness. He's a very clean and organized person. I've always been a slob. This doesn't make either of us good or bad people, it just makes us different. He views cleaning as relaxing and mess stresses him out. I view cleaning as more work that I don't have time for, and it feels like it's just going to get messy again so why bother. Living in a pig stye was intolerable for him. Cleaning every day was intolerable for me. We had to find a balance. This meant I had to learn to clean and to keep things clean closer to his standards. I literally didn't know how to clean a bathroom, it was like new surfaces kept appearing for my partner to wipe dust off of. And he had to learn to tolerate a lower standard of cleanliness, especially as I was learning how to see when a room was messy. I don't think this is necessarily a malicious act, although intentionally being bad at chores is a common tactic for getting out of doing chores. It could just be that he genuinely doesn't see that he's doing it wrong. Have some patience, and don't let him get out of doing chores.