Family Christmas secret- what would you do?

[Peppapigforlife]

Confusing story so if you can get through it, well done :)

My uncle (let's call him uncle A), left my aunt of thirty years for another woman about 18 months ago. He was seeing her in secret for ages but everyone knew (including my aunt) yet he kept denying it. He left her and their two children (teenage and young adult) and moved into a flat in the same town. He still goes round to the family house to see his children sometimes but it's always frosty.
His new woman, who is also married with young adult children, moved into a flat near to him and that was that.
For Christmas he started getting upset that my aunt and his children were going away to see her sister and that he would be left 'alone' on Christmas day, as his girlfriend was going to spend it with her husband and son.
The uncle is my blood uncle but I'm very close to my aunt. İ used to be close to my uncle but since he started his new life he stopped making any effort with any of us.
Anyway, for Christmas my other uncle (his brother) invited me and my DD over for Christmas dinner along with my dad. İ said shall we invite uncle A, because he's going to be on his own? After Uncle A was invited he then suggested that we all go and spend Christmas in my aunt's house instead (which he refers to as The Big House) as it would be bigger and nicer. Me and my other uncle said to one another that we wouldn't want to go to my aunt's house for Christmas as it would be weird using her house for Christmas without her there and she definitely wouldn't like it, so we said no. İ also said that I could just imagine uncle A's new woman coming round for a drink.

Fast forward and my aunt was telling me about my uncle giving her abuse again for not staying around for Christmas and I warned her about his idea for her house. She was furious and then told me later he had poo-poo'd the idea of spending Christmas with his brothers and İ. Anyway, in the end İ decided to stay home with a friend as I'd just moved house and didn't want to travel, but told my dad and uncle they were welcome to come to mine with uncle A, but they all did their own thing.

Spoke to my uncle today about meeting up and he said he got a text from uncle A this morning saying he'd had a great Christmas and he had spent it with his girlfriend at 'The Big House', basically he had Christmas with his new woman, who was an affair partner to begin with, at my aunt's house behind her back.
Now my other uncle is saying he wishes he didn't know about it as he feels like a horrible secret keeper. İ said İ was going to tell my aunt, because it's out of order, but he said please don't, as it will cause a big row and he will be seen as a secret keeper for not telling her. He said he only told me because İ had predicted it happening and he couldn't believe İ was right! He's now stuck between betraying the trust of his brother, or betraying the trust his sister in law who he has known most of his life. İf i keep it secret, İ'm betraying her trust, but if İ tell her, I'm betraying the trust of my other uncle who was told the secret. I'm not bothered about betraying the trust of Uncle A, as he's basically written me off for making effort with me these days.
What would you do if you were me?

Any chance you could condense this?!

I would say a friend had seen they were there over Christmas. He's the biggest cheeky fucker known to mankind.

That was really shitty of uncle A. I would tell your aunt, and I would tell the other uncle that you are going to do so. These things come out somehow and your aunt would feel awful to find out that you had known all along.

I'd tell her.

What Asiama said basically. Uncle A does not deserve anyone keeping his cruddy behaviour secret.

Is the big house the house they all grew up in?

İ don't have any friends in her town as I'm from somewhere else, so she would ask who saw them and I'd have to say a name of someone who knows her and she would question them.

Condensed version, my uncle had Christmas at my aunt's big house when she went away for Christmas with their children, but he went there with his new girlfriend who he was seeing behind my aunt's back and then her for, a couple of years ago. İt's his house too, on paper, but he moved out ages ago, into a small flat.

Tell your aunt.
Why does he have access to the house anyway?

Their kids grew up in the big house.

He has access because he goes round there to see his children sometimes when my aunt is away for the weekend or night or evening. They don't like going to his flat.

I’d tell her. But she must suspect someone has been in the house for Xmas surely?
If they’ve been separated for 18 months are they divorced? Ideally she needs to get to a situation where she can change the locks.

I wouldn't tell my aunt not to upset her.

I would ask him not to do it again or I would tell her if it happens again.

He can't keep doing it and lying about it as the truth will come out sooner or later.

So is he seeing both your aunt and a married woman at the same time? Does a married woman's husband know about her affair with your uncle?

Tell your aunt, but don't dob uncle A in. Its not his fault uncle B is a dickhead.
Say a friend told you they'd seen them going in.
Tell Uncle A what you've told your Aunt, so he can keep himself out of it.

There is absolutely no way she wouldn't know someone else had been in her house. Especially if the seed had already been sown that he might plan to do it.

I would tell your aunt the truth and ask her to pretend her neighbours reported back to her, keeping quiet about the other uncle's involvement.

İ can't say a friend saw as İ don't have any friends in that area.

The husband knows as she has moved out into a flat closer to my uncle. She was originally an affair partner but now my aunt and uncle have seperated and he has become open about his relationship. My aunt HATES her. She might go round there for a fight if she finds out this woman has sat on her sofas.

She needs to know and to take his key away

Is there a neighbour who might tip her off?

@Peppapigforlife

He has access because he goes round there to see his children sometimes when my aunt is away for the weekend or night or evening. They don't like going to his flat.

If he goes to see his children then presumably his children are in the house at the time and able to open the door to him. Therefore he has no need if a key and should return it to your aunt.

Tell her. When she gets home, she will probably know or feel that someone has been in her house. So tell her.

Tell the Aunt. No dilemma here. Tell her. She needs to change the locks so he can't get in!

You can't really see the front door or front gate from the neighbours' houses so they wouldn't be able to say anything. İt's because the house is on a slope with a long garden path, if that sounds confusing.

I have a feeling she would just sense it hopefully, but then she might bring it up and say i think xyz and I'll have to say yes you're right.

Tell her. The fucking audacity.

I’d tell the uncle that you know about it, that it’s completely out of order, and that if he doesn’t tell your aunt, you will.

He is totally in the wrong here, on several counts. He gets one chance to tell her the truth or she’ll find out anyway. Your best bet in this situation is be up front and transparent with both of them and let them sort it out between them.

Text or email anonymously? He sounds absolutely horrible and your aunt abd cousins deserves to know how he's abused them. Why couldn't they have had Christmas at his flat?