Okay, simple first. There's basically three types of positive relationships: friends, family, and your significant other. You can have as many friends as you want, but there's usually a couple that you're a lot closer to than anyone else. Family are the people you're born into and grow up with. Significant other is boyfriend/girlfriend/husband/wife and so on.
The tricky part is that these aren't hard and fast rules. Your mom can be your best friend, your best friend could become your boyfriend, you can be adopted into a family that you aren't blood related to. It can get pretty murky. Even when I say things like "humans aren't into hatesex" or "we only have one significant other at a time", that's not true for everyone. Some people have multiple boyfriends and girlfriends and they're all okay with that. It's not the norm, but it happens.
So this whole, we have four quadrants and there's one person in each quadrant and they have names and rules and labels, thing... it's kinda funky from my perspective.
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The tricky part is that these aren't hard and fast rules. Your mom can be your best friend, your best friend could become your boyfriend, you can be adopted into a family that you aren't blood related to. It can get pretty murky. Even when I say things like "humans aren't into hatesex" or "we only have one significant other at a time", that's not true for everyone. Some people have multiple boyfriends and girlfriends and they're all okay with that. It's not the norm, but it happens.
So this whole, we have four quadrants and there's one person in each quadrant and they have names and rules and labels, thing... it's kinda funky from my perspective.