I just resigned! He took it well, and said he could see things has been hard for me, and understood the childcare issue, and Liam going to school. Just said it's a part of life, and I'm moving into the next stage. My heart is still racing a thousand miles an hour, but I'm sure I'll feel better tonight, now that it's done.
I told him I still may be available casually if he needs me. To maintain the website, or if he goes away etc.