As in early adulthood, tend to be emotionally closest during middle adulthood.

sibling bond (Sister- Sister bond)

Explanation:

The sibling bond is one of the most important in our lives. And in the seesaw of sibling relationships, it is that between sisters that is both the CLOSEST and MOST COMPETITIVE.

In childhood, a girl may view her older sister as a rival; when puberty approaches, the sister becomes an admirable guide to the adolescent world; shortly thereafter, when both are receiving boys' attentions, the sister may again become an unwelcome competitor. Things improve as they get older. This may be because there's less to prove and even less time to prove it, but it's also linked to no longer needing to compete for your parents' attention.

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