Resist the urge to treat their responses as a matched set
Here is the thing about twins that child development research keeps confirming: shared genes and a shared womb do not produce shared emotional architecture. One twin may cry openly, ask hard questions, want to sleep in your bed for three weeks. The other may seem almost unaffected, go quiet in a way that is harder to read, or redirect every conversation back to soccer schedules. Neither response is wrong, and neither is a performance.
The trap parents fall into is averaging them. You find the middle emotional temperature in the room and address that. You check on the one who is visibly upset and assume the quieter one is fine. Or worse, you check on the quiet one so often, trying to draw something out, that you miss the signals the expressive one is actually sending.
Practice naming what you are seeing for each child separately, not comparatively. 'You seem really sad this week' lands better than 'Your brother seems upset, how are you feeling?' The comparison, even a gentle one, puts them in a dynamic they did not ask for. Treat this the same way you would treat two different children of different ages. Because emotionally, that is exactly what they are.
Build separate one-on-one check-ins into each week
Twins spend most of their lives being a unit. They share classrooms, birthday parties, playdates, car rides. Which means when something big happens, they also share the emotional airspace, and neither one may say what they actually think while the other is sitting right there.
The practical fix is simpler than it sounds. A weekly solo check-in, even fifteen minutes, even just a walk to get ice cream, creates a space where each child is not performing for an audience of one sibling. What you tend to find, once you separate them, is that they have been managing each other's feelings as much as their own. The expressive twin has been softening what he says to protect the quiet one. The quiet one has been holding himself together because she seems so sad already.
You do not need to make these check-ins feel like therapy sessions. A car ride works. Helping you fold laundry works. Research consistently shows that children process difficult experiences most effectively in low-pressure, side-by-side contexts, not face-to-face interrogations. Keep it casual. Ask about small things. The big things tend to come up on their own when the room is quiet enough.
Watch for the twin who is holding the other one up
This one is easy to miss because it looks, from the outside, like resilience. One twin appears to be doing well. Maybe she is steady, cheerful even. Maybe she is the one reassuring her brother that everything is going to be okay, or making him laugh at dinner when the tension gets thick.
What is actually happening may be something closer to a child who has taken on emotional labor that is too heavy for her. Research on children and family stress consistently shows that parentification, or the process where a child absorbs an adult-level emotional role, can appear indistinguishable from maturity. It is only later, sometimes much later, that the weight of it shows up.
Look for the signs: Does she change the subject when asked directly about her own feelings? Does she track her twin's emotional state more carefully than her own? Does she seem tired in a way that does not match her activity level? If the answer is yes to most of those, she needs your explicit permission to not be okay. Say it plainly. 'It is not your job to make sure he is fine. That is my job.' You may have to say it more than once.
Expect different timelines and do not use one twin as a benchmark for the other
The moment you say, even once, 'Your sister seems to be doing okay with this,' you have accidentally told your son that his timeline is wrong. Children are exquisitely sensitive to comparison, and twins more so than most, because they have spent their entire lives being measured against the same-age person who is always in the room.
Different emotional timelines are not a sign that one child is struggling more or that you have done something wrong. What people often experience with twins post-divorce is a kind of leapfrog pattern: one seems fine for a month, then gets hit with a wave of big feelings right when the other has settled. This is normal. It does not mean anyone is backsliding.
If you are seeing behavioral changes in one twin that seem more significant, our piece on children's behavioral issues after divorce has practical tools for understanding what those shifts actually mean and when to bring in extra support. The short version is this: regression, irritability, and clinginess are all language when words are not enough. Treat them as information, not problems to correct.
Give each twin something that belongs only to them right now
There is something research on self-expansion and identity keeps pointing to that applies to children just as much as it does to adults: newness builds the self back. A child who is given a small space that is entirely her own, a new activity, a class, a solo playdate with one friend, starts to build an internal structure that is not dependent on her twin's presence or her family's current chaos.
This is not about separating them or manufacturing independence for its own sake. It is about giving each child a corner of their life where the divorce is not the organizing fact. The pottery class, the solo sports team, the book club that meets after school, these are not distractions. They are where a child remembers who she is outside of this specific hard season.
Practically: ask each twin separately what they might want to try. Not together, not at the same table. You will likely get two different answers. Follow both of them. The fact that the answers differ is not a problem to solve. It is the whole point.