Changes

Relationships are like a giant spider-web of one-way arrows. You have interest in a few other people, they have interest in a few other people, et cetera. Even when the arrows are two-way, they may be of different thickness, since people may well like each other in different degrees. When you get a two-way arrow, the greatest common interest denominator will generally drive the relationship. In the rare relationship, these arrows are roughly identical to begin with. More often, they will differ, but still be quite workable in some form, even if the greatest common denominator of hookup and marriage is hookup.