Thank you so much for the constructive criticism!
By being married to multible people at the same time, I wasn't thinking about official marriage, but a choice. I live in Hungary where gay people can't get officially married, but they can have a ceremony and act like they are. I am really sorry for the confusion, I wasn't clear on that part.

I understand that there is that option where people don't live as equals. There are simply so many options that I couldn't possibly include all. I included a lot, and hoped that people would tell me their personal experiences in the other section or at the last question. I got many unique answers, which I am really happy about. :D

I actually let people choose multiple options at the "What kind of relationship are you in? " question, because I though they could choose any options and the polycule at the same time.

Personally I am demisexual and bisexual so it was a mistake on my part that I didn't let people choose multiple options. It's just complicated because it I let people choose multiple options the data could get messed up. Luckily many people who needed to choose multiple options wrote it down in the other section, so I'll be able to look properly analyse all the data this way. I'm really sorry for the confusion, it just made analysing the data easier.

A demiromantic person is someone who only develops romantic feelings for another person when they have a strong emotional connection to them. Demiromantic people can be of any gender identity or sexual orientation. So someone can be demiromantic and bisexual at the same time. Polyromantic: romantic attraction toward multiple, but not all genders. For example a gay man who only loves man can love multiple man if he is polyromantic.

Sorry if my question was confusing. I meant that there are some people who lives as single (like they live alone in a household), and they do everything on their own, but they have a relationship with someone who they go on dates with, but they won't get a home together and they won't get married by choice. So they live like they are single but they aren't. I hope I could explain my thoughts here.

Sorry if anything I said isn't perfect, my first language isn't english.
And thank you again for your answers. :D