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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to ask family to stop prioritising my brother's ex best friend?

77 replies

SILhatesHer · 11/07/2026 12:07

DB has had the same female best friend since he was 15. He’s 40 now. When he got married at 35 quite abruptly distanced himself from her.

This was awkward as we all know her and love her and she is at majority of family events/ celebrations etc.

It’s really clear that SIL detests her. She said she is really hurt by this that she feels she’s lost her best friend and doesn’t understand why etc etc . All of my family are saying how awful it is and really backing her up. To the point she is now taking about coercive control and worrying that DB is somehow being abused by SIL. Even talk of doing a Clare’s law on SIL or making a report of coercive control ?

DB and SIL don’t attend any events if she will be there. I’ve stopped inviting her to anything we host so that DB and SIL can come as they have dc and I think family comes first. This has now caused tension between me and other family members and the friend. It’s not ideal as I also got along well with her and have known her since I was 13.

I’ve spoken to DB and he says there’s no issue they just grew apart, have different values now and had opposing views on what the friendship was going forward, he said he found her too intense and that she upset SIL. SIL will only say she just doesn’t like or understand her and doesn’t want her as part of their lives.

DB has an ex wife and dc - SIL gets on extremely well with her. There’s regular contact with his dc and they get on well so this is not it seems in SIL nature to be jealous or overreact. I think there is a bigger issue with the friend that we don’t know about.

AIBU to ask other family to back off a little too and not keep inviting her to so many things and for DM to stop seeing her socially as it feel wrong and it’s pushing DB out ?

OP posts:
thesealion · Yesterday 17:20

Sunseaandtea · Yesterday 16:29

My general thoughts before I read this.

When circumstances change such as marriage, divorce etc then often the family & friends dynamic of those involved change too. The fact your brother has grown apart from this woman & is prioritising his wife is admirable. His former friend shoudn't be continuing to interfere with your family life when it's obvious your brother & his wife don't wish to continue the relationship. Your mother is wrong to keep it going. I wouldn't like it if my mil was still involved with a former friend of DH unless it was a former wife with children involved. There is basically no need for the relationship to continue especially when her DIL is being made to feel uncomfortable with the whole situation.

Insane. Your/your husband’s decision to end a friendship has absolutely no bearing on whether other family members are also friends with the person.

Sunseaandtea · Yesterday 17:40

thesealion · Yesterday 17:20

Insane. Your/your husband’s decision to end a friendship has absolutely no bearing on whether other family members are also friends with the person.

It most certainly is if it is the main cause of disruption within a family unit. I would never consider putting my sons EX! friend before my son & DIL or my sons former wife if there were no children involved. If it caused my family unhappiness that would be enough for me to back off. If you don't agree then that's your mindset & opinion. It wouldn't be everyone's idea & they are just as entitled to prioritise the general feeling within immediate family.

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