Sorry for what you found & how you feel right now, but remember this & what you found as he’s probably going to return and gaslight you. My ex focused on the fact I’d seen his phone & broken his trust etc, ignoring the cheating, lies, drugs etc. It’s ok to feel shock, anger, sadness etc, maybe even a touch of guilt with the kids so allow yourself to feel those and take a minute to decide your next steps. You’ve got this x