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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

My son stopped talking to his sister after finding out she was dating his best friend, and I don’t know how to fix this

614 replies

pilarr · Today 10:52

I never thought I would be in a situation where my own children would become strangers to each other.

For context, I'm 46 years old and I have three kids. My oldest son is 19, my daughter is 18, and my youngest son is 14.

My oldest son has had the same best friend since they were 8 years old he is same age as my son. That boy has been part of our family for so long that I never really saw him as just a friend he was almost like another son to me. He was always at our house for dinners, sleepovers, holidays, and everything in between. I watched him grow up.

My daughter also grew up with him. They were the same age, went to the same school, and were always close friends. They would play together when they were younger, and as they got older they would go hiking or spend time together, especially when my son wasn’t around. I always thought they had a good friendship and that both of them were good kids.

About two months ago, my daughter came to me and told me something I wasn’t expecting she and my son’s best friend were dating. They had already been together for two months, and she told me it wasn’t just a small crush. They were serious about each other.

She was nervous telling me. The first thing I asked was whether my son knew. She said no, but she wanted to tell him herself and asked me not to say anything. I felt uncomfortable keeping something from my son, but I also felt it was my daughter’s responsibility to have that conversation with him.

My daughter is a very thoughtful person. She is not someone who makes decisions without thinking about the consequences, so I trusted that she had taken this seriously.

A month ago, my son found out from some friends that his sister and his best friend were dating. What hurt him the most was not only the relationship itself, but that everyone seemed to know except him.

He asked my daughter why she didn’t tell him. She explained that she was scared he would react exactly the way he did. She wanted to wait until she knew the relationship was serious because she didn’t want him to think it was just a temporary teenage crush.

My son was furious. He told her that she shouldn’t date his best friend and that things between them would never be the same. He also confronted his best friend, who tried to explain that he genuinely cared about my daughter and wasn’t playing around.

I understand why my son feels betrayed. His best friend was like a brother to him, and now he feels like that friendship has changed. He has also felt responsible for protecting his sister since their father passed away five years ago.

But I also told him that while his sister should have told him sooner, she did not do something wrong by having feelings for someone she cares about.

I can see both sides. My son is hurt, and my daughter feels guilty. She has cried to me because she misses her brother and doesn’t want to lose him. But my son is still angry and has completely shut both of them out.

It has been a month, and my two older kids barely speak. They act like strangers in the same house. I don’t want this to permanently damage the relationship between my children.

OP posts:
user1492757084 · Today 11:49

So your son has lost his best friend and his sister. She should have been the one to inform her brother and she should have been prepared to have listened to any concerns.

They are all adults so can only sort this out themselves but it would have been easier if they were all five years older, with more chance that the romantic relationship will be lasting.

Introvertedbuthappy · Today 11:50

I feel sorry for DS. I imagine it’s feeling like he’s been made a fool of by being the last to know, and two of the people he loves the most being the ones to have betrayed him. I imagine he’s feeling deeply hurt and will hopefully come round, given time.

I do find it quite disturbing on here that so many women can’t seem to fathom that a young man may have feelings other than rage, and as for suggesting that this must mean that DS is in love with his best friend or has romantic feelings towards him…well, I have no words.

Your DS is also probably feeling worried that whilst it used to be him and best friend, he’s now the outsider looking in on that triangle. Everything about that dynamic has changed and it seemed like he was the last one to know. He’s likely feeling deeply hurt. What does he say when you talk to him about it OP? He probably needs some support processing this big change to his social life and some reassurance.

Of course DD can date who she wants, but I can guarantee that if in this scenario the genders were swapped then this would be receiving very different responses!

TonTonMacoute · Today 11:51

Stay out of it, but your son really needs to start behaving like an adult.

His feelings are obviously hurt, it's easy to understand why, but his reaction is very extreme and not very healthy.

DameOfThrones · Today 11:51

OtterandaRock · Today 11:43

Do you co-parent with anyone, OP? Are there fair-minded mentors or father figures in your son's life who could have a word about boundaries and freedom and change?

You think the OP's going to be co-parenting with someone, 5 years after her husband's death?

Poppy61 · Today 11:52

ABitFab · Today 11:08

Stay out of it

I think this is the best advice and be a pair of ears and arms when required.

OtterandaRock · Today 11:53

cheezncrackers · Today 11:24

Yes, that is exactly what I'm saying. Out of all the guys in the world, why would you date your DB's best friend? Find someone else!

In my circles this is how people find compatible partners and it is seen as a good thing! You fall in love with family friends, schoolfriends' brothers, neighbours, and other people who get along well. NOT sexually control your family.

BountifulPantry · Today 11:53

What a storm in a teacup!

JMSA · Today 11:53

Your son is weirded out by the situation, which I can kind of understand. It means seeing two people he loves in a completely different light. And he’ll be hurt too, because he found out from someone else, which is less than ideal.
Time’s a healer so just wait it out. Might also be a good idea to offer counselling to whoever may want it.

GreenCaterpillarOnALeaf · Today 11:54

Personally I would stay out of it and just see how it plays out. My SIL was mates with my sister and now she’s happily married to my brother - but oh my god you should have seen the hissy fit my sister threw. You’d have thought she was in love with SIL.

Dozycuntlaters · Today 11:54

Sorry OP but your son needs to grow up and stop being such a baby about this. He should be glad that two of the most important people in his life are happy. Your daughter is not in the wrong at all and should not feel guilty and your son has proved her exactly right by her reasoning not to tell him. To not be talking to either her or his mate is ridiculous and he's going to end up the loser.

DameOfThrones · Today 11:54

Ablondiebutagoody · Today 11:47

I'm with DS. Of all the boys/girls in the World, why pick this one. Its weird.

Because she wasn't supermarket shopping and picking items off a shelf.

Sometimes human beings develop feelings for various people.

EasternEcho · Today 11:54

Sounds like a Friends episode with Monica, Chandler, and Ross. Your son has the right to his own feelings. But as to "He told her that she shouldn’t date his best friend", he doesn't have any right to lay down rules like that. He doesn't own his friend, or his sister, to forbid anything. Wonder where he gets the idea that he does.

Auroraloves · Today 11:55

I feel for your son to be honest. When they break up how will the relationship with his friend be like?

DeftGoldHedgehog · Today 11:55

Hopefully he will get over it. I'd tell him it's understandable to feel hurt that he didn't know but also understandable that they didn't tell him given his reaction. Now he does know and he can't change the situation, so if he doesn't want to lose the good opinion of a sibling and a best mate, he needs to get over it.

Joliefolie · Today 11:55

Leave them to sort it out themselves. Of course you don't want your adult children to have a poor relationship, what parent does, but they have both made poor choices and they need to work it out without you getting involved or taking sides.

OtterandaRock · Today 11:55

DameOfThrones · Today 11:51

You think the OP's going to be co-parenting with someone, 5 years after her husband's death?

I have known it to happen a few times, and very lovingly and pragmatically.

Also, co-parenting need not be sexual. Is there anyone (of any gender) regularly present and stepping in, an auntie, an uncle, a godparent?

LlynTegid · Today 11:56

I'm not sure you can do much.

I do agree with you about the reassurance that you know this young man reasonably well- it's not as if it is some predatory 30 something or older.

cheezncrackers · Today 11:56

MrsShawnHatosy · Today 11:40

I meant what is the issue with dating your sibling’s best friend? Of course the sneaking around was not ideal, but have said that you think that dating your sibling’s best friend is unacceptable full stop. You have not explained why you think that.

Not ideal? It's a horrible betrayal and both the DD and the BF have handled it terribly. But the reason this awful situation has arisen is because by dating they've chosen each other and their wants over him and his feelings. And that's why it's horrible when this happens and why it's a good idea not to get involved with your DB's best mate (or your best mate's DB or DSis or ex or whatever). It always ends horribly with someone being devastated and feeling massively hurt and betrayed.

DameOfThrones · Today 11:57

Auroraloves · Today 11:55

I feel for your son to be honest. When they break up how will the relationship with his friend be like?

Well he's been giving his friend a silent punishment for a month now, so it may not survive that anyway.

DeftGoldHedgehog · Today 11:57

Ablondiebutagoody · Today 11:47

I'm with DS. Of all the boys/girls in the World, why pick this one. Its weird.

It's not weird at all. A couple of mates (albeit at an older age) ended up marrying lads they were friends with in their teens or dated then but were too young for anything more serious.

NotAnotherScarf · Today 11:57

OtterandaRock · Today 11:30

You can't guarantee that the male friendship is forever! What even is this.

No you can't. But they have been friends since they were 8. The friend was there for the son when the father died...thats a tight bond which the relationship with the daughter may change dramatically...remember the son is only 19

Lobelia123 · Today 11:58

I wonder if your sons strong reaction is linked to how close this boy is to the family....it may not be so much that the friend is dating his sister, he may on some level fear he is getting too close and moving in to take his place is his family. Its not rational, but feelings very often arent. It just seems a strong and immature reaction for something that might be uncomfortable to start with, but is certainly manageable.

SoLateToTheParty · Today 11:58

Not sure you can fix it, but it will fizzle out either way, as others suggested one because they’ll be together and that’s it or two because sadly they may break up.

These things happen, it is but life, but I do understand it’s hard for you stuck in the middle. Do you have anyone else you can talk to about it as this would also cause me stress?

godmum56 · Today 11:58

Tiredandannoyed2023 · Today 11:07

I think your daughter should have been honest with her brother earlier on as some (or most) of his anger is likely to be related to hearing about it from someone else. If this is such a close friend then I don’t understand why he’s so annoyed?

Edited

hang on....the "best friend" didn't tell him either. I reckon both knew he would kick off and they were right. Its up to your son how he reacts. I get its unusual and he has a right to his feelings but does he want to lose his sister and his best friend?
And you? Stay out of it.

DameOfThrones · Today 11:59

NotAnotherScarf · Today 11:57

No you can't. But they have been friends since they were 8. The friend was there for the son when the father died...thats a tight bond which the relationship with the daughter may change dramatically...remember the son is only 19

The son is determined to change it anyway by refusing to speak to his friend for a month.

It's quite manipulative behaviour I think.

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