Domination & submission _ the BDSM relationship handbook ( PDFDrive )

We don’t feel the need to drop one friend in order to make room for another.
We instinctively understand that just because someone is our friend, that we
don’t have the right to control their feelings or behavior, nor should they feel
entitled to control ours.
We don’t expect each of our friends to meet all of our needs and interests, nor
are we willing to give up our interests just because our current friends aren’t
much interested in them. We may enjoy going to the movies with one friend,
dancing with another, and enjoying Thai food with a third. Even if it were
possible for one friend to match every one of our needs and interests, we’d
probably still want to make new friends. We also usually consider any friend
who is irrationally jealous of all our other friends to be somewhat problematic.
In spite of all of the challenges that must be overcome, a few of our select
friends occasionally somehow manage to navigate the tortuous path that takes
them from being just friends to becoming our lovers. And suddenly, everything
changes.
Perhaps the question we should be asking is, why does it have to?