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There is a familiar trajectory built into the way we talk about serious relationships. Two people meet, spend more time together, begin sharing routines, and gradually accumulate more of the infrastructure of life in common. Their friends overlap. Their holidays merge. They may move into the same home, combine finances, marry, raise children, and begin making major decisions as a unit. None of this is necessarily undesirable. For many couples, increasing integration is one of the great pleasures of love.

But there is an assumption hidden inside this progression that is rarely examined: Why should increasing love require increasing coupling?

I came to this question not from decades of navigating a successful marriage, but from watching its opposite. Growing up, I observed how tight coupling—when two lives become so structurally intertwined that separation means total logistical, social, and identity collapse—can quietly turn commitment into captivity. I watched how easily "building a life together" could turn into a trap where two people stayed not purely out of desire, but because the cost of decoupling was simply too high. That observation shaped my own caution. For a long time, I hesitated to step into deep relationships, largely because the default model seemed to require surrendering the very autonomy that makes a person whole.

In engineering and software design, two systems are said to be tightly coupled when each depends heavily on the internal workings of the other. A change to one component can require changes elsewhere, and the behavior of the whole system becomes harder to separate into independent parts. Tight coupling is not always bad. Sometimes it is efficient, elegant, or unavoidable. But engineers generally notice it because it creates dependencies, and dependencies affect how resilient a system is when something changes.