Talking to your kid about her new partner

It is 5:45pm on a Tuesday and we are driving home from soccer. He is in the back seat, eating a banana, and he says, in the tone he uses for unimportant news, "Mum's friend Daniel was at our house on the weekend." There is a small pause. He does not look up. He keeps eating the banana. My hands are at ten and two on the wheel. I have about two seconds before my face gives me away in the rear-view mirror. I use them to take a long, slow breath and say, "Oh yeah? What's Daniel like." The voice comes out almost normal. Almost.

This is the moment. Not when she tells you. Not when you find out from a mutual friend. Not when you see his car in the driveway. The moment is when the kid tells you, and how you respond in the next ninety seconds will set the tone for the next ten years of this configuration. Get this one right, even if you have to fake it for the duration of the drive home.

The instinct to interrogate

Your first instinct will be to interrogate. How long has he been around. How often does he stay over. Does he sleep in the same room. Has he met your mum. What does he do for work. Where is he from. Does he have his own kids. The list goes on and on, and your kid will answer the first three questions willingly and then realise something is wrong and shut down, and you will have lost him for the rest of the afternoon.

Do not interrogate. The kid is not your source. He is a nine-year-old who has just told you a piece of news that he has been carrying around, possibly for weeks, possibly with instructions from his mum about what he is and is not allowed to say. He is testing the water with you. He is checking whether telling you was safe. The water needs to be calm.

Ask one question. Make it light. "What's he like" is good. "Does he laugh at your jokes" is even better. The point is to give the kid permission to talk if he wants to, without making him feel like he is being debriefed. If he gives you a one-word answer, accept it. Drive home. Make dinner. He may bring it up again, he may not. Either is fine.

• One open question, lightly delivered
• Pause, do not fill the silence
• Accept whatever answer he gives, including no answer
• Do not ask follow-up logistics in the same conversation
• Drop it after ninety seconds, regardless of where it has landed

The trap of disparaging him

You have not met Daniel. You may never meet Daniel. Daniel may turn out to be a wonderful man who loves your son and treats his mother well, or Daniel may turn out to be a disaster. You do not know yet. Your kid does not know yet either, but he is the one living with the data.

Whatever you say about Daniel in the first six months will be remembered. If you say something cutting and Daniel turns out to be lovely, the kid will hold the cutting comment against you and trust your judgment less. If you say something neutral and Daniel turns out to be a disaster, the kid will come to you with the data when he is ready, and he will trust you because you did not pre-judge.

The disparaging is tempting because it lets you blow off steam in a low-stakes-feeling moment. It is not low-stakes. The kid is your only audience and the only audience that matters. Do not, in his hearing, ever, even joking, say anything sarcastic about Daniel. Not "oh, Daniel, sounds like a real charmer." Not "I'm sure mum knows what she's doing." Not "well, that was quick." Nothing. Neutral or warm, those are your only two registers.

Curiosity versus surveillance

There is a thin line between being curious about your kid's life (good) and using your kid as a surveillance device on your ex's house (very bad). The kid will know which one you are doing within about three conversations.

Curiosity sounds like: "How was your weekend? What did you get up to?" then listening, then asking about the bits he chooses to elaborate on. Curiosity is interested in him.

Surveillance sounds like: "Was Daniel there? Where did he sleep? What time did he leave? Did he eat dinner with you?" Surveillance is interested in her.

Kids feel the difference. Kids hate being surveilled. They will start saying less about both houses, not just the things you are asking about. You will lose access to his actual inner life, which is the only real thing you have at this stage, in exchange for a few low-quality data points about his mother's love life. Bad trade.

The loyalty bind

Your kid is in a loyalty bind. He likes his mum, who he loves. He likes Daniel, maybe, or is at least willing to give Daniel a chance. He loves you. He does not want to upset you by saying he likes Daniel. He does not want to upset his mum by saying he doesn't.

The kindest thing you can do is take yourself out of the loyalty bind entirely. Tell him, explicitly, in a calm moment (not the same moment you find out): "It's okay if you like Daniel. It's also okay if you don't. Either is fine with me. I love you whatever happens at mum's house, and you don't have to choose." Then mean it. Then keep meaning it for a long time.

When he tells you something good about Daniel ("Daniel took us to the river and showed me how to skim a stone"), you say "that sounds cool, mate." You do not say "well, your dad knows how to skim a stone too." Even if it's true. Especially if it's true. Daniel skimming the stone is not a competition with you skimming the stone. There is room for both.

Standard lines that work

Have a few lines pre-loaded for the moments that catch you off guard. You will not always be calm. You will not always be ready. The lines are there for when your face wants to do one thing and your mouth needs to do another.

When he says Daniel is at mum's: "Cool, hope you had a good weekend." When he says he likes Daniel: "I'm glad. I want you to feel good at mum's house." When he asks if you are sad about it: "Sometimes a bit, but I'm fine, and I'm glad your mum has someone she's happy with." When he asks if Daniel will replace you: "No. Daniel is mum's friend. I'm your dad. Those are different jobs and they don't swap." When he says Daniel is mean: pause, listen, ask one careful question, then take the data home and decide what to do with it later.

That last one is the only line where you do not stay neutral. If your kid tells you that the new partner is treating him badly, that is the only situation where you act, and you act by listening carefully, not by reacting in the moment.

When you genuinely have concerns

Sometimes the new partner is genuinely a problem. Not "I don't like him" problem. Genuine problem. Drinking too much around the kid, shouting at the kid, hitting the kid (rare but it happens), bringing inappropriate people into the house, leaving the kid unsupervised in unsafe ways.

If you have genuine concerns, do not go through the kid. The kid is not your investigator and he should not be carrying the weight of being the one who reported a problem. Go through her, in writing, with specifics, in language that is descriptive not accusatory.

"On Saturday, [child] came home and told me X. I want to understand what happened. Can we talk about this when neither of us has him?" Not "Daniel is hitting our son and I'm calling a lawyer." Even if you think Daniel is hitting your son and you are about to call a lawyer.

If she is dismissive, you go through more formal channels (a mediator, a family lawyer, in serious cases the police or child safety). You do not go through Facebook. You do not go through your mutual friends. You do not go through the kid.

In the meantime, keep being the calm parent. The kid needs to know that one of his houses is steady, no matter what is happening in the other. If you become unsteady because you are angry about Daniel, you have just removed the kid's safe house. DO NOT.

What if you have a new partner too

Symmetry helps a lot here. If you also have a new partner, the conversation becomes more balanced. The kid has two new people in his life, which is more disorienting in some ways but easier in others, because it removes the asymmetry of "mum has moved on and dad hasn't."

The same rules apply in reverse. Tell your kid about your new partner gently, slowly, not in the same conversation that you find out about hers. Introduce them slowly, in low-stakes settings, with no pressure for the kid to like them on day one. Do not ask the kid to compare. Do not ask the kid to choose.

If you do not have a new partner, that is fine too. There is no race. The kid does not need you to have one.

A short closing

Drive home. Listen well. Stay calm at both houses.