I've tried to explain to my bf how my brain works before....... boy, was that ever useless. Unfortunately, Weasel I think the only person that is ever going to be able to understand how your brain works is YOU. I don't think you're ever going to be able to explain it to anyone.....
Hang in there - I've been there too. Spilling your guts in the hopes that he'll understand, just a little..... and in the end you just end up feeling
more messed up.
Try not to dwell on it too much - like Thickman said..... today is a new day.