If a woman is being harassed or assaulted, you don't look away but

• intervene.
• tell the assaulter that you find this way of coming on to someone repulsive.

If it becomes dangerous,

• speak to bystanders, get help.
• Offer protection to the victim (for example, open the car or apartment door).
• Talk to the offender about what you see and what conclusions you've drawn from it.