is there often strange dynamics?
like, with "pairs" and then a person being left out?
because I only have a brother, and I get along twin-ishly with him, and even mum does get a little jealous. like, not bitchily, but just very occasionally it`s obvious she feels left out.
and kids could all be SO much meaner to eachother etcetera.
so I was just wondering how common weirdness with the "2 plus 1" thing is between siblings.