Explaining divorce 7 years later

I know it's true what they say, kids of divorce will constantly wonder about and reframe their parents' divorces through the lens of a maturing mind and new experiences as they age. A 14 year old revisits and analyzes his parents' divorce that happened when he was six. And will still be doing it when he's 16... and 26. It is part of their formative experience. Your divorce is their life. It never goes away.My just-turned-12 year old son just asked me straight out if his mom cheated on me, and if that was the reason for our divorce 8 years ago. She did. It is.What to say?Till now I've always said "it's between mom and dad...grown up stuff...all you need to know is that we both love you." He's no longer accepting that as a complete answer.Any guidance from parents who've dealt with this? via /r/Parenting http://bit.ly/2W7VhNP