When it all boils down to it, she is just playing games. I think the reason she doesn't go ahead and file is because she knows she loses a lot more control over me if we're actually divorced. It seems clear to me from a few things she's said lately that she fully expects us to still be separated by the end of this year.
One - She want us to go talk to an accountant because she's planning on filing separately at the end of the year and she needs to know how we can best do it so that "we" get the most money back.
Two - A friend of hers is having a wedding in October. The friend asked if she would be bringing anyone. My wife told her she'd "probably be bringing her boyfriend." (This is the same man that she tells me isn't that important to her when the subject comes up, now he's her boyfriend.)
Three - When I told her she needs to talk to D8 to clear up her confusion about her having a boyfriend when she's still married she mentioned that eventually I will meet someone else too and D8 will have to deal with that. Of course, the difference between my wife and I is my children won't see anyone I'm dating until I've been dating for quite a while and think that she could potentially be my next wife.