Couples usually expect DBT to make things better in a straight line. Fewer explosions, fewer crises, less walking on eggshells. That does happen, and it isn’t the whole story, because a long relationship organises itself around whatever is going on in it — and when that changes, the arrangement built around it has to change too.
The roles that were there
In a lot of these relationships, one person has been the regulated one: calm, managing, talking the other down, absorbing. It’s exhausting, and it also confers a role — the steady one, the needed one, the one who isn’t the problem.
As the other person becomes more able to regulate, that role dissolves. Some partners find this an enormous relief. Some find, uncomfortably, that they miss being needed, or that without the crises they have nothing to organise around, or that the difficulties that were always theirs are now visible because the larger difficulty has stopped covering them.
None of this is a reason not to do the treatment. It’s a reason to expect it.
The middle stretch
Around month three or four, several things happen at once that can look, from the outside, like the therapy making things worse.
They start setting boundaries, which is the goal, and boundaries land on the nearest person. They stop using behaviors that previously ended arguments, which means more arguments get finished rather than detonated. And they may become less available in the way they used to be, because phone coaching and the programme are absorbing what used to come to you at midnight.
A partner who wasn’t told to expect this frequently concludes the therapist is turning them against you. That’s worth saying out loud rather than letting it sit.
What actually helps, from the other side
Learn validation. Genuinely, properly, as a skill. It’s the highest-leverage thing available to you and it takes practice, because the instinct under pressure is to reassure, and reassurance invalidates.
Stop being the only emergency service. Say plainly that you want them to use their coaching call rather than only coming to you. This isn’t withdrawal; it’s what makes staying possible.
Do not police the treatment. Not the homework, not the card, not whether they used a skill. The moment you become the monitor, the therapy becomes something happening between you rather than something they’re doing.
Get your own support — a family skills group, or your own therapist. You have very likely been carrying something heavy for a long time without anyone asking.
Where couples therapy fits
Usually later. Most DBT clinicians would rather stage-one work be reasonably stable before adding couples therapy, because couples work raises emotional intensity by design and needs a floor of regulation under it.
The exception is safety. If either of you is afraid of the other, or there has been violence, that’s a different conversation and it needs to happen with a clinician now rather than being folded into the DBT plan. If that’s your situation, the National Domestic Violence Hotline is 1-800-799-7233.