I'm completely stuck. Mine are 6 and 3. The 3 year old has accepted that we are separating. The 6 year old has asked why. She is too young for any variation of the truth (his cheating). She doesn't know about OW and won't. She is still asking 'why' to "because mummy and daddy have agreed that this is the best thing for all of us". I have no intention of telling her the truth but have no idea where to go from here.