Getting sick of being around my brother 24/7, sorry long rant.

I work with my brother, and currently he is also living with my fiancé and I. And I'm so sick of seeing him. I love my brother to death, I'm probably closest with him then any of my other siblings, but after living with him, I don't even want to see him around anymore. I feel bad saying it. Lately I've been acting like his mother and I'm sick of it. He doesn't clean up after himself, he doesn't do dishes, he smokes in the house (which I have yelled at him a few times for, but he doesn't seem to want to stop) he walks in the house with his muddy boots on and doesn't clean it up, I have to, he doesn't listen to me when I ask him to help out or clean up after himself. I constantly catch him stealing our food. But it's like he just doesn't care. And it's not like I can ask him to move out because my dad owns the house and we all pay rent. But I'm just stressed out constantly everyday because of him, and it's taking a toll on my body, making it hard for TTC. He doesn't know yet that were TTC, I'm hoping once we get pregnant, that he'll move out, or that my dad will tell him to. He says he has enough money for his own place, but just doesn't want to. It's SO FRUSTRATING AND STRESSFUL! Sorry, long rant.