It's only been a couple of days...give yourself time, it will feel like a rollercoaster you're on right now and that's ok and to be expected. Now, this may not be the right time and I don't expect you to think about it now but it may be something to look at with your IC at some point...or not. I look at your past relationships and there is a series of guys who can't commit. Your H married you but was never emotionally committed to the R, your previous BF wouldn't commit and now FF doesn't feel he can commit. Hmmmmm. What I know about people, me included, is that we repeat patterns and often don't even realize we're doing it. So, when he time is right, give this some thought. This just came to me so I'm tossing it out...sorry, if it's not the right timing.
