Thanks KML. I will ask my attorney. Our tax accountant is very good friend's with my FIL so I don't feel he's neutral.
As for h's claim that the marriage ended in 2015, I have a text from him from THIS September where he proudly says he is first to wish me Happy Anniversary again this year! (He said it first last year too and admitted so in this one text. That means he considered us married in 2017 and 2016.)
Much confusion on his part with timelines and all; like those Dali paintings with the dripping clocks.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced