Avoid isolated areas. Go out with other couples, or stay in public places. If you become uncomfortable with your date, help is nearby. Make your feelings clear. Let him know early on if you don't intend to engage in sexual activity.
Some men have the misconception that women secretly want sex, and that they play hard to get.
Watch for signs. Be concerned if your date orders you around, becomes irritated if you talk to others, makes decisions without regard for you, or if his questions become personal or sexual. Trust your feelings. If something feels wrong, it probably is. Get to a safe place, and call a friend or relative.