You say that things are playing out like your last break up. You guys got back together. I don't want to get your hopes high either, but maybe this is a good thing in that she might come back, so parts of history might get repeated here. If it does, at least you know where you messed up last time that caused the reconciliation to not hold, the piecing process (from your previous post). So don't let that part of history repeat itself.
But I think you need to distance yourself more from your W. It seems like she has too much access to you and you're doing too many favors for her, IMHO. You don't want it to turn into a cake eating situation. I think you need to set boundaries or firmer boundaries. Again, I'm no expert, it really is just an opinion.
Me:28 H:30 D:3 M:6.5 T:7.5 BD: 10-27-13 H moved out: 11-01-13 Handling other paperwork before petition is to be filed.