I'd really appreciate any advice.
Me & my OH have lived as brother/sister for over 5 yrs now. Our DS is 8. We've continued sharing the house because we want to stay there for our son & financially we are in a bad place. He can't afford to rent, atm.
He's in the spare room atm with the intention of moving into the garage within the year. He wants this, I this. It just needs work to make it liveable.
Our son is nine the wiser, nothing has changed for him except that 8 months ago me & my ex 'officially' decided to call it quits.
Me & my ex actually get on really well. Yes we wind each other up & sometimes he's annoying but we really get on well as friends.
How do we tell our son we have split up but will continue to share the house. I guess I just need the Words to use. I just can't wrap my head around how to break it to him without breaking his heart 
It's important to us that we cause as least upset to him as possible.
Anyone for any words of wisdom? Please?