I think its pretty simple. Its a comfort level thing. In my situation my gf is accepting and prefers that i am me, one whole person, not two separate people. Whether that means i wear panties to bed every night or always have my toenails done or what. She likes it better that way. If there was some sort of conflict and she wasent accepting i wouldnt do it. Or i would work with her to find a boundary that works for both of us.
I think a person can be accepting of some parts and not accepting of others. My gf didnt mind most things when i came out to her. The one issue she had was me having my toes done. She felt like that encroached on her feminism so i spent a long time without my toes done out of respect for her. Eventually things changed, but if it didnt i would still be biting the bullet and not painting my toes.