I know some people that have serious sister complex and brother complex... i wonder if the...

I have a very very bad sister-complex with my old sister and I have never thought about her in a romantic way ^^º there is a difference between being very clingy and being in love

lol same here with my sister

I have an older bro who's nine years older and I used to really idolize him when I was a kid, at some point I got scared I was falling inlove with my own bro, but I have OCD and have experienced obsessive fears of developing incestuous feelings towards all my family members, including my dad, at some point or other, so it was probably just another instance with an OCD nightmare.

I was wondering about that too!
I'm an only child so I have no way of knowing how it feels like to have a brother/sister complex.
However, in ancient history, there were cases where marriage between siblings was normal. Like the ancient Egyptians and in the Bible(Abraham and Sarah were siblings).
So I was thinking, if it was socially accepted maybe people would start not having revulsion to incense? Well, I do have a revulsion to father/daughter incense for my own dad so I'm not sure...
Somehow, maybe because I don't have a brother or sister, I feel like romance between siblings is something that could happen, especially if they have strong attachment to each other.
I don't know, but was just thinking of the possibilities...