I was careful to hide it from my My 5yo daughter but he moved out so she noticed and I did cry a lot(I'd say I had a bad head). She was waking up screaming after having nightmares her dad died and hitting and spitting at me.
We both sat her down and explained her dad had been bad and hurt me and couldn't live with me bad and. He promised her he would do whatever it takes to make it up to us and come back home. I wasnt keen on that because he kept changing his mind about us but it was said :s. She is back to her old self now, not hitting or spitting and happy. I guess honestly is what's best.