Back when my wife and I were DADT I would dress in the evening after she went to bed. She has always gone to bed an hour or two before me so it worked. She "caught" me once when she couldn't sleep and gave me a little grief. I told her if she didn't want to see me dressed then don't come looking for me! We have a family room in the lower level of our house, the bedroom is in the upper level. She had no reason to come down other than to see me.
I will admit the DADT didn't last long.