Did you ever follow Squiggy? His wife was having an affair and filed for D. But then broke it off in the 11th hour and started to reconcile.
Your W sounds like his. She was all over the map. Playing both sides.
He was very vigilant and when things started to change he adapted. I think you will find yourself there to. If given opportunities to court her (flirt, hug, be playful, whatever brought you two together) do that. As being sporadic is definitely related to uncertainty. However, only do this if you believe there is no OM.
Me: 32 W: 29 T:8 M: 6 D4 S2 M - 8/2008 W is not happy - 1/2014 W wants D - 9/2014 W moved out - 11/2014 D filed - 1/23/2015 D'ed - 2/25/2015 Gave X the Letter - 11/10/2015