But I will concede that 'what to tell friends' is a bit of an issue. We've said that our approach is to be honest with those we're close to, and with whom we have the time and opportunity to answer questions they have.
And that other people don't necessarily need to know the ins and outs, and that some people might think it's weird.
But that doesn't mean they think you're weird DDs. And if you want to say, "yes well my mum is a bit weird" then that's fine.
And if they feel uncomfortable about any conversations they have had then they can talk to me about it and we can work out the best way to approach it.
Their closest friends parents know anyway, in case they came home with questions. And they're fine with it too. (It's just you lot who seem to have a problem with it...)
As it happens it doesn't seem to occur to other children to ask if their mummy's DP has another relationship. And why would it?