Your teenager came home and walked past you like you were furniture. You said hello and they made a sound that was not a word. You asked about their day and they closed a door. You knocked on the door and they said in a voice that was almost a growl that you do not understand anything and they need to be alone. You sat on the other side of the door for a minute, listening to them not make any sound, and then you went downstairs and looked at the kitchen counter and tried to remember the small person who used to follow you from room to room asking why the moon was there.
This is the week they hate you. There will be another one. The hating is not what it looks like, which is a verdict on you. The hating is what Lisa Damour calls the work of the adolescent, which is to detach enough from the parent to become a person capable of leaving. Damour's frame is precise. Adolescents do not hate their parents because the parents have done something wrong. They hate them because love that strong, which has shaped every cell of the adolescent's body, cannot be the thing they walk out of the house carrying without modification. The love has to be put through some kind of metabolism. The metabolism, in many adolescents, looks like contempt. The contempt is the chemical process by which the love gets reorganized into a form that can travel.
Daniel Siegel, in Brainstorm, makes the related point that the teenage brain is not a defective adult brain. It is a brain doing something specific, which is rewiring at a speed and scale unmatched since infancy. The prefrontal cortex is pruning aggressively, killing off the connections it has decided are not load-bearing. The limbic system, meanwhile, is fully online and hot. The dopamine system has remodeled itself to reward novelty and risk. The combination is a person who feels everything more intensely than they did a year ago, who is suddenly competent at abstract reasoning but does not yet have the integrative capacity to bring that reasoning to bear on their own emotional life in real time. They can argue with you about climate policy with terrifying precision and then slam a door because you said the wrong thing about dinner.
What you are feeling, on your side of that door, is a specific kind of grief. The child who used to want you is not gone. They are sitting on a bed three meters from you. But the relationship you had with them, which was your home for years, is being dismantled by them with you inside it. They cannot dismantle it gently because they are not yet capable of gentleness toward you. Gentleness toward parents is a late achievement, often not arriving until the adolescent has had enough distance to feel safe being soft again. This usually means they have to leave first. You will not get to skip the rough years by being a particularly good parent. The rough years are not punishment for failure. The rough years are the only available technology for producing someone who can love you from the outside as well as the inside.
The temptation, when your teenager hates you this week, is to try to fix it. You will be tempted to over-explain, to corner them with your reasonableness, to demand they articulate what is wrong, to perform extra warmth, to negotiate. All of these will fail. They will fail because the teenager does not actually know what is wrong. The wrongness is not a fact about the world. It is the felt sense of being a system in transition, and they have located the source of the discomfort, incorrectly but inevitably, in you. You are not the source. You are the visible surface. The actual source is internal and inaccessible to them, which is why they cannot tell you what they need. They do not know.
What works, mostly, is staying. Not staying in the sense of being in their face. Staying in the sense of remaining a stable object in the room. You make dinner. You ask one question and accept the non-answer. You do not retaliate when they are cold. You do not punish the withdrawal with your own withdrawal. You hold the position. This is not passive. It is active in a specific way. You are doing the work of being someone who can be hated and not collapse, hated and not retaliate, hated and still cook the same food and ask the same gentle questions. This is what they need to see, even though they cannot tell you they need to see it. They need to know that their hating you does not destroy you, because if their hating you destroys you, then their hating you becomes too dangerous to do, and they cannot complete the work of separation. They will instead carry an undigested version of the love into adulthood and live with it as anxiety.
You loving them this week, while they hate you, is not pretending nothing is wrong. It is not performing extra warmth. It is the smaller, harder thing, which is continuing to be in the room. Continuing to be a person whose presence does not require their approval. Continuing to make breakfast. Continuing, when they finally come out of the room two days later and sit at the table looking exhausted, to pass them the milk without comment. You will be tempted, in that moment, to mark the reconciliation. To say something significant. Don't. Pass the milk. The not-marking is the love. The teenager, watching this out of the corner of their eye, learns that there is at least one relationship in the world where you can be terrible and the other person does not keep score. This will save them later, in ways they will not be able to trace to you, in ways you will never get credit for.
The unity here is hard. It says that the parent and the adolescent are still one system even when the adolescent is doing everything possible to pretend otherwise. The pretending is part of the system. The system needs the pretending in order to do its work. Your job is to be the part of the system that does not pretend. Not the part that argues with the pretending. The part that holds the position underneath it.