I believe in this case (just based on the information here) that she is completely overreacting.
I am very close with my ex-husband's father. He still invites me and my children to holidays like Thanksgiving, and down to their vacation home.
He never asks about my personal relationships, but loves me and his grandchildren anyway. That's all that really matters.
My boyfriend is very close to his ex-wife's family. They were in a relationship for 5 years and he had been part of the family for years before they ever got together because his little brother and hers had been best friends. I don't see any reason why that should change.
It sounds like she went into a relationship seeing what was there but hoping it would change while making him believe she was accepting of it. They invited him and his children and wife over. I think your friend should absolutely attend! I think, and hope, that she will be pleasantly surprised and see why he gets along so well with them, and they seem like charming people.
If he is not the cheating type, and is devoted, I think she needs to trust him, get dolled up, and go over, and smile. But that's just my opinion.
Updated
I believe in this case (just based on the information here) that she is completely overreacting.
I am very close with my ex-husband's father. He still invites me and my children to holidays like Thanksgiving, and down to their vacation home.
He never asks about my personal relationships, but loves me and his grandchildren anyway. That's all that really matters.
My boyfriend is very close to his ex-wife's family. They were in a relationship for 5 years and he had been part of the family for years before they ever got together because his little brother and hers had been best friends. I don't see any reason why that should change.
It sounds like she went into a relationship seeing what was there but hoping it would change while making him believe she was accepting of it. They invited him and his children and wife over. I think your friend should absolutely attend! I think, and hope, that she will be pleasantly surprised and see why he gets along so well with them, and they seem like charming people.
If he is not the cheating type, and is devoted, I think she needs to trust him, get dolled up, and go over, and smile. But that's just my opinion.