Know what your personal social standards are and stick to them. Don't allow your judgment to be overruled by an aggressive pursuer. If you do end up alone with a man, stand next to the buttons and push them all if attacked. Consider printing your work phone number as opposed to your home phone number on checks. For years a certain amount of controversy has surrounded the issue of whether or not a woman should resist a sexual assault.
Studies exist which support points of view ranging from strong resistance to total submission.
There is no hard and fast rule when it comes to self defense. Talking your way out of a situation. Telling the rapist you're pregnant, menstruating, or afflicted with a communicable disease can be an effective ploy. Faking submission and waiting for an appropriate opportunity to make an escape. Urinating, defecating, or vomiting.