When someone becomes all good or all bad
One minute, someone is everything. The person who understands you, who feels safe, who you'd trust with anything. Then something shifts: a canceled plan, a slow reply, a comment that lands wrong, and that same person becomes someone else entirely. Untrustworthy. Uncaring. Someone you need distance from.
This is splitting, and if you've experienced it, you already know how disorienting it is, not just for the people around you, but for you.
It's not a choice
Splitting gets described a lot as manipulation, as if the person doing it is choosing to see someone as all good or all bad to get something out of them. That's not what's happening. Splitting is a defense, and defenses aren't chosen. They activate automatically, usually faster than conscious thought, because some part of the mind decided a long time ago that holding two conflicting truths about a person at once was too dangerous to risk.
If you grew up in an environment where the people who were supposed to protect you were also unpredictable, sometimes attuned and sometimes frightening, splitting made sense as a survival strategy. It let you organize an unpredictable world into something you could respond to quickly. All good meant safe. All bad meant get away. There wasn't room for a slower, more integrated read of a person who could be both loving and disappointing in the same day.
Why it feels so real in the moment
The hardest part of splitting isn't the shift itself; it's how convincing each side feels while it's happening. When someone is in the "all bad" side of a split, the good history doesn't disappear; it becomes inaccessible. It's not that you're pretending the good moments didn't happen. In that moment, you genuinely can't feel them as true.
This is what makes splitting different from just being upset with someone. Being upset leaves the whole picture intact; you're angry at someone you still know you love. Splitting collapses the picture. There's no both at once, just whichever side is loudest right now.
What integration actually means
The goal in treatment isn't to stop having strong reactions to people. It's to build the capacity to hold both sides of someone at the same time, to be disappointed in someone and still remember that they matter to you, without one erasing the other. This is slow work. It usually isn't a single insight that changes things; it's building the tolerance to sit with the discomfort of an unresolved, mixed feeling instead of resolving it by picking a side.
This is part of what a relational, psychodynamic approach offers that skills-based approaches alone often don't reach. Skills can help you pause before acting on a split. But the split itself softens through the experience of being in a relationship, including the therapeutic one, that can hold complexity without needing to collapse it. Over time, the therapist becomes someone you can be disappointed in and still trust, which is often the first place that capacity gets practiced.
If this sounds familiar
You're not broken, and you're not manipulative. You're carrying a pattern that made sense once and doesn't have to be permanent. If splitting has been shaping your relationships in ways that feel out of your control, that's something we can work on together.