Yep, even though my h has not filed, I also have heard that I have contributed nothing to the marriage?!? (I think that line is on page 4 of the MLC handbook.)
BTW - one of th VERY craziest truisms of MLC is that the MLCer really believes everything will go exactly as he/she fantasizes. When my h told me he wanted an open marriage, he was as shocked that I said no, as I was that he asked. He even said he was surprised that I said no?!? I could tell he was already 3 steps ahead in his "planning."
Don't answer him! Remember anything you write can be shown to lawyers. Use your lawyer!!! Plus, he is a bratty punk. I think of Sotto's line: operate from your best self. (Her wording is more eloquent, though.)
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