Hi kgirl. I think about those things all the time. I have been in my situation for going on 8 mon the which most people here will say isn't near long enough. I think the question to ask yourself is are you really ready to move on or is it a tactic to win him back or take away the pain. If the answer is either of those then I wouldn't do anything. You can move on with 90% of your life while still married. The only thing you really can't do is look for someone else (I guess that's debatable too though). Are you in a spot where you can date someone else anyway?
It's difficult to do and I struggle with it every minute of every day but that's why this is such tough stuff. You will learn a lot about yourself and your weaknesses and will be a better person for it.
When you're ready, you'll know.
Me:38 W:39 No Children BD: 5/13 EA/PA Confirmed: 7/13 W Moved out 12/13