Havent read all your post but just to answer you question..
180's are here to stay, you should have done them for you not to gain your H/W back.. so what ever you changed you should be keeping and actually fighting for..
Some times detaching is just better in a situation, better to take time, walk away, get your focus back..
Ironically I have been back with my H in piecing for a year now and back in the same house about ten months.. Now I actually get quite cross with H if I see him letting go/ going back to his old habits all the ones he said he needed to get away from me because I was stopping him do them.. Believe its not too hard to remind him that he left me to do them and he now has some honour to stick to them, as other wise he made my life hell for nothing!
Hope this makes sense?
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W 47 H 47 M 24 T 30
Once lost but now found and happily married again!