Can I just say... once and for all... that there is no answer that you can find on the internet, for the internet has no sense of sensuality or sexuality.
Despite your genders or physical preference, this is a topic that needs to be worked out between you two personally.
Approach her and gently discuss it. Even if it becomes a heated argument, try to maintain calm and accept the eventual outcome (good or bad you have already set your mind on one of these two outcomes by posting this)
That being said, Sexuality is too complex for a faceless forums...