Avoid excessive use of alcohol and drugs, as they interfere with clear thinking, effective communication and your ability to respond in your own best interest. Being turned down for sexual relations is not necessarily a rejection of you personally. Accept a person's decision. Don't assume that previous permission for sexual relations means a person is under a continuing obligation to have sex with you. Don't assume your date wants the same degree of intimacy as you.
Rape is a crime of violence.
It is motivated by the desire to control and dominate, not solely by sexual desire. Don't make statements that imply forced sexual demands. Don't assume spending money on a date entitles you to sex. Don't allow others to attempt forced sex with another person. Communicate your limits clearly.