Oh boy, here we go.
1. Being dirty: I don't mean cluttered or messy, I'm cluttered and messy. But if I see a plate that's Lord only knows how old, that's growing its own ecosystem, and you're living with it? I will be out the door. This also applies to the body. I can deal with unkempt, didn't brush your hair, didn't do your makeup, "these are my pajamas" types, but please be clean and don't stink too horribly. At least smell like you take a shower every other day.
2. Non-communication: Why do people think relationships can work if you don't talk to each other? Seriously. This is the issue with my current roommate. We don't talk to her because she doesn't want to, and in some cases refuses to, talk about serious things. The only time she talks with us about serious business is when things have gone past what she wants and starts yelling at us. I have made it abundantly clear to my fiance that we need to talk to each other when something isn't right.
3. Pushing buttons: I understand if someone does something annoying on accident, I don't mean that. I mean when you tell a person "hey, that kind of annoyed me, can you stop?" and they intentionally keep doing it just to annoy you. That grates me like no other and shows that they won't respect my other, larger requests. It's different than teasing someone you already know and you're both getting a kick out of it, I mean like you have actually told them to STOP in a very serious tone of voice and they won't.
4. Too Far on the Spectrum: This doesn't really apply to any one spectrum. I don't mean on the autistic spectrum either. For the most part, I mean on the political spectrum, but it can mean other things. I don't deal well with super racist, sexist, homophobic, etc. assholes who think we need to build a wall and keep foreigners out. I also hate when they whine about how they're being censored because they can't say the n-word and how they'll laugh about legit triggers (like abuse 'n stuff). I also don't deal well with SJW, lamp-kin is a gender, "I hate anyone who fits into the majority of Americans" kind of people who need safe spaces because their professor challenged their argument like they're supposed to do (pro-tip: don't hate more than 80% of the people you live with). Mostly I hate both of these people because they both surround themselves with an echo chamber and won't listen to anyone's side but their own. So these guys, while fun to laugh at on the internet, I will refuse to befriend.
My biggest dealbreaker of all, no questions asked-
5. Making Fun of my Hobbies and Passions: This is an absolute no, and if anyone ever does this, they immediately lose respect from me. Especially if I have encouraged them about their own hobbies. Me and my fiance had a chat about this when he kept making fun of some of my characters. Told him that wasn't cool, and he can think about how stupid it is all he wants, but it better not get back to me because I will be LIVID.
Unfortunately, I need some better friends because of this. Some of my closest friends have made fun of my hobbies and passions, and it really hurt me. They don't seem to understand when I tell them that it hurt me, either. "It's just a joke, jeez." Seems to be a common comeback when I talk about it. So I need to hunt for others, which will be hard, because I've technically never made a friend in my life. I more just had a group I hung out with and they brought me people to be friends with.
Other than these, I really don't have dealbreakers when it comes to relationships. I'm pretty open when it comes to them!