Woman discovers mums best pal is dating ex-boyfriend whos 17 years younger

A woman just found out her mum's best friend is now dating her ex-boyfriend – and she's not happy.

The female had been with her now ex-partner for many years as the pair grew up together.

She's also been close with her mum's best friend, after spending many Christmas seasons with her.

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Now in the ultimate betrayal, the woman found out the family friend is now in a relationship with her ex.

And there is a 17-year age difference between them too.

Posting on Mumsnet, the woman explained how she often sees the pair as the friend lives close by.

On top of it all, the mum's pal was like "an auntie to her" so she's devastated to go after her ex-flame.

In the post, she said: "Am I being unreasonable to think this is incredibly weird?

"He is 23, she is 40, me and him went out most of our childhood."

But the friend doesn't feel she's doing anything wrong by dating a 23-year-old, who's 17 years younger than her.

The woman added: "She would often see us, she thinks she's not doing anything wrong."

She continued: "My mum is still friends with her and I just can't understand why! Maybe I'm over thinking it."

In response, many people were quick to jump in and tell her she's right to feel confused and angry by the situation.

One said: "This is so many wrongs I can't even."

Another added: "Well as he is an ex they're not doing anything wrong. Maybe odd but not wrong."

A third stated: "I can understand your hurt with your mum too.

"While I wouldn't put pressure on my mum to drop her, I'd want my mum to at least understand I found it really weird."

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