Hello,
Aibu, when I met my dp he was close to his female best friend, they would go out together shopping meals ect. I was always fine with this.
We sometimes used to go out as a foursome with her dh. We all used to get on ok, although sometimes the conversation would be for them to reminisce about what they had been up too.
I never thought much about it, but my friend who was her best friend until they had a fall out has told me they used to be sleeping together before we met. I'm devastated I had no idea, he has lied to me when I've asked him if there has ever been anything.
To make matters worse everyone has known, her dp, friends we have in common. I feel like a joke.
Aibu to be upset?