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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Overly involved brother-in-law

82 replies

DenimTraybake · 10/12/2024 14:17

I currently live with my partner and his twin brother. My partner and I met a year before they bought a house together. We got serious quickly and wanted to settle down, but he was already in the process of buying a house with his brother—a plan they had been working on for years, saving for a deposit, going to viewings, and making offers. When their offer was accepted, I realized I wasn’t entirely comfortable with the situation. At 33, I wanted children soon and a home of our own.

I expressed my concerns, but my partner explained that he had promised to help his brother buy a house and couldn’t break that promise. He said it was only for three years; after that, they would sell, and we’d get a place together. A few months later, COVID hit, and I moved in so we could be together during restrictions. At first, it was tense—I felt like an outsider, his brother resented my presence, and their family and friends seemed to downplay our relationship. It was all about “the twins,” and I was on the sidelines.

After a few difficult months, I moved out, and my partner and I nearly broke up. But life outside the relationship was lonely, and my partner worked hard to win me back. His effort made me realize how much he loved and cared for me, which deepened my love for him. We reconciled, and my relationship with his brother improved. A year later, I became pregnant.

However, things became strained again after our baby was born. His brother became overly involved, giving unsolicited advice, acting like an expert, and making comments about being a “second dad.” Even their mother made a hurtful remark implying my child could just as easily have been his brother’s. His brother would talk about my DD to others as if she were his, saying he could “experience fatherhood” through her. This upset me—I chose my partner to have a baby with, not his brother.

I wanted to move out but found it overwhelming with a newborn. Over time, things improved slightly as my DD grew older. His brother plays with her a lot, which I appreciate, but he often oversteps, trying to parent her in my presence—worrying about her meals or hydration when that’s our responsibility. Sometimes I address it, but other times I’m too tired, which likely sends mixed signals. Constantly reminding him is exhausting.

Now, I’m pregnant with our second child, and my desire to move has intensified. The dynamic between the twins is difficult to navigate—they work together, have always lived together, share friends, and even have a joint bank account (while my partner and I don’t). Small things add up, like Christmas cards addressed only to them or joint presents for their family, which leaves me feeling excluded.
While his brother helps with our DD and my partner relies on him for support, it frustrates me that my partner hasn’t fully experienced solo parenting. This lack of experience made him less empathetic when I struggled early on. Recently, his brother sent me an article about foods to avoid for children, something I doubt he’d send to other parents. I can’t tell if I’m being overly sensitive due to pregnancy or if my feelings are valid.

I don’t feel like we’ve had time to bond as a family of three—it often feels like it’s either me and my DD, or me alone while my partner and his brother bond with her. My partner understands how I feel and has agreed that we’ll move out this year. Still, I can’t help but wonder: am I being too harsh, or are my feelings reasonable?

OP posts:
LightDrizzle · 10/12/2024 14:21

YANU but at the same time you walked into this situation with your eyes wide open.

It wouldn’t be for me. What does your partner say when you discuss it? Are you back living with them?

Terrribletwos · 10/12/2024 14:22

The twins seem deeply enmeshed and there are a few red flags here, to say the least. The remark from the mother is very odd, plus the fact they have joint bank accounts but you and your partner do not. You haven't mentioned what your partner thinks of this strange setup?

ATastingMenuButItsAllCrisps · 10/12/2024 14:25

Bizarre choice to stay living with these weird men. Can you get your own property and then you'll have secure housing and your boyfriend can visit?

Ponderingwindow · 10/12/2024 14:28

You live with the man. He is going to be much more actively involved in your life and your child’s life than a typical uncle.

You also chose to have not one, but two babies knowing the living situation and financial setup. It’s not just that you had children without getting married, your children’s father has a deeper financial relationship with his brother than he has with you.

your frustration is directed towards the wrong person. The brother is there day to day. He is going to be involved in raising your children. Your problem
is with your boyfriend.

ManhattanPopcorn · 10/12/2024 14:35

You knew exactly what you were getting into here. You chose to move back in. You chose to get pregnant a second time.

It brings to mind that quote that the definition of insanity is doing the same thing over and over again and expecting different results.

YABU for expecting different results.

DaftyLass · 10/12/2024 14:36

You knew he was buying a house with his twin, you were only together a year when they did.
You chose to move on with the pair of them, you chose to have a baby on that situation, you chose to move back in to that situation, you chose to have a second baby, knowing how it was with the first.
So yeah, yabu

Commonsenseisnotsocommon · 10/12/2024 14:44

If you don't know much about enmeshment then read up, your partner and his brother are the textbook case study. I don't know how on earth you can continue to have a relationship with him, aren't you put off by it all? No doubt the arrangement works well for your pil as they'll feel your odd ball bil will always be close to his brother and therefore they don't need to worry about him after they've gone. However, you're wasting your life with the top weirdos, and your children are caught up in an odd dynamic which will lead to confusion. After letting life happen to you the past few years you need to step up, stand apart and forge your own way for you and your children with independence from your bil. I'd be moving out and giving partner a choice, either move with you to have a family life or stay with brother. Bil could take in a tenant to split the bills short term and the house needs to go longer term. It's a batshit crazy situation.

vibratosprigato · 10/12/2024 14:46

I don't blame the BIL for being a bit too involved considering the nature of his relationship with his brother, and the fact you all live together.

How does your partner respond when you talk about buying a house together? Can his twin afford to buy him out or would the house need to be sold? You need to know that there is a definite end date to this situation before you can decide whether or not to stay.

cushionfiend · 10/12/2024 14:54

It's been well over 3 years now, so surely time for your partner to be buying a place with you and moving out? Personally, I would be giving an ultimatum by now.

Nanny0gg · 10/12/2024 14:57

LightDrizzle · 10/12/2024 14:21

YANU but at the same time you walked into this situation with your eyes wide open.

It wouldn’t be for me. What does your partner say when you discuss it? Are you back living with them?

^^ This

You walked out once. He got you back

And then it all just carried on

Why?

Nn9011 · 10/12/2024 14:58

Your partner and his brother are enmeshed and I'd encourage you to do some research about those types of relationships and make some difficult decisions. Your partner and his brother are substituting each other for a romantic partner and you are providing them with children. I'm not saying they actually want to be in a relationship or anything gross like that but similar to parental/child relationships that go wrong like this, somewhere along the line the responsibilities/shared goals and experiences/expectations get put on each other instead of a romantic partner.
I honestly doubt things will ever change, the only way it could begin to heal (in my opinion) would be if he actually took steps to move out.

Although yes perhaps there is some accountability on you for ignoring red flags, there's no shame or blame for being in this scenario. Many people end up in similar circumstances only it's PIL/Partner, there's many posts on here about their mil being a 'boy mum'. I say that just because I saw someone saying you walked into it - no one walks into a situation like this because they can clearly see the outcome, we're all human.

As I say, I'd encourage you to do some research on enmeshed relationships and perhaps seek some individual counselling and then review your situation. Don't fall into the trap of being worried about the children - better to be happy apart that sad/angry together if it comes to that.

Hoppinggreen · 10/12/2024 14:58

I actually feel sorry for your BIL, he probably doesn't want any of this.
However, your partner put his brother first and will continue to do so, none of this is a surprise to you so I don't have a lot of sympathy

Terrribletwos · 10/12/2024 15:02

Hoppinggreen · 10/12/2024 14:58

I actually feel sorry for your BIL, he probably doesn't want any of this.
However, your partner put his brother first and will continue to do so, none of this is a surprise to you so I don't have a lot of sympathy

Not so sure about that, the brother sounds way too involved. If he doesn't want to be so involved he would be encouraging the other brother to move on surely?

SapphOhNo · 10/12/2024 15:02

What a bizarre situation for you to walk BACK into and then bring children into it. Take ownership of your life.

whatnow5 · 10/12/2024 15:02

You’re always going to play second fiddle to their twin relationship. (I’m not saying this should be the case, but it is.)

You can move into a house with your partner and children and hope that will solve things, or you can split up, and have lots of people to mind the kids for you and let you have a life.

I would pick the latter, as ultimately, if your partner wanted to live with just you he would be by now. He is picking is twin over you, and will continue to do so. Is that the life you want?

MammaTo · 10/12/2024 15:08

I don’t think your BIL is completely to blame here. I think it would be hard to not feel some kind of parental pull to your twin siblings child who lives in the same house, until you move out he is like a third parent.

Hoppinggreen · 10/12/2024 15:12

Terrribletwos · 10/12/2024 15:02

Not so sure about that, the brother sounds way too involved. If he doesn't want to be so involved he would be encouraging the other brother to move on surely?

He was buying a house with his brother like they had always planned and then OP moves in with them, gets pg, moves out, moves back, gets pg again.
Not many single blokes would be happy about that

Snoopdoggydog123 · 10/12/2024 15:19

So you've sleep walked into 2 kids?
What did you think was going to change by doing nothing?

He doesn't want to change so why would he? Because you want him to?
You're not his number 1 so he's not going to make himself and brother unhappy for you.

So you'll either have to suck it up like you have been or use your own steam to do something about it.

GabriellaMontez · 10/12/2024 15:23

Twin relationships can be very complex. Especially male twins.

That's not going to change.

I don't know how you tolerate it. It would drive me insane.

Yanbu to leave. Or continue a relationship living separately if you want.

You were crazy to go back there.

LavenderSquid · 10/12/2024 15:25

Gosh. Their relationship sounds very enmeshed. Like you are the third wheel rather than BIL. It was a bit mad to move back in with them when you got back together really, let alone bring kids into it.

You need to move out asap. With or without your DP. He can follow if and when he breaks up with his brother. This situation is very odd and I think you've lost sight of that if you are questioning yourself.

Terrribletwos · 10/12/2024 15:27

Hoppinggreen · 10/12/2024 15:12

He was buying a house with his brother like they had always planned and then OP moves in with them, gets pg, moves out, moves back, gets pg again.
Not many single blokes would be happy about that

But what does the partner think about this? Surely, they were involved?

SalsaLights · 10/12/2024 15:28

You need to move out.

You knew they were enmeshed when you moved back in. It's not going to change and it's not going to get better whilst you still live there.

The only way to put boundaries in place is to live somewhere else, and be very clear on the fact that you married your H, not the pair of them.

Hoppinggreen · 10/12/2024 15:37

Terrribletwos · 10/12/2024 15:27

But what does the partner think about this? Surely, they were involved?

But the partner chose this BIL didn't

Terrribletwos · 10/12/2024 15:42

I had to decipher your post as it didn't make sense initially. Still not sure what you mean? The partner chose the wife? Confused.

PartyLlama · 10/12/2024 15:47

Your partner sounds like he is married to
his twin....I'd rather be a single parent

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