I know your pain well. Sitch with my W is somewhat similar. I have a S to stay strong for and you have kids to do the same for. It [censored], but one day down the road you'll realize she isnt worth it.
See someone right away. We are all here together in pretty much the same situations, so your not alone in this.
Together:20 years M:3 years Me:40 WW:40 S15 A suspected:5/17 AC:5/18 BD:8/18 WW in full blown R w/ OM Still under same roof