Since I posted this thread here I've done little else but think about what to do next. I have been fairly certain for some time that our marriage is over and that a very significant factor is what he did several years ago, that I've tried to bury/avoid for so long and have only recently come fully understand and accept the seriousness of it.
But... I feel sick with worry about actually telling him that I want to separate. I can't bring myself to do it. I have fully formed plan - I've even worked out how we could share parenting and how we could organise our living arrangements and finances. But it's like there is a huge wall or block that stops me from getting the words out of my mouth. I can't take the next step.
I need help to understand why I'm like this. I appreciate that everyone would feel anxious to some degree about something like this, but honestly I've felt like this for literally years.