They're 3 (just) and 5 (just). It's an amicable split and their dad will be living just down the road. The 5 year old is still a little young for his age, he's always been behind milestones, and I'm not sure how much he'd understand.
My parents divorced when I was 8 and I remember a girl at school telling me it was because my dad didn't love my mum anymore and it absolutely crushed me. My parents had told me my dad was moving away for work. I'm not sure whether to tell say anything about 'love' at all. I'm finding this whole process so difficult to navigate.