I've always told any GG that I start to get close to that I dress. I was fortunate in that I had a very close GG freind who I knew since 1969 who was very,very interested in my dressing. I recommend that anyone who crossdresses tell their partner if the relationship starts to evolve into something serious. If she disaproves or thinks the less of you then you'll know that shacking up could be a mistake. I think it's OK to dress all you want at home in front of your SO. I once stayed dressed for 3 days at my GG freind's apartment. But use a little sense,your not just a child to be entertained by your SO and you will have to be a contributing member of the household with chores and everything else.
