"Likewise, having consented to sex with someone once or even several times in the past doesn’t mean you’ve consented to sex with that person indefinitely. Consent is not like a physical permit that, once issued, we can save for use at a future date. The person who willingly and enthusiastically had sex with us last night might not want to have sex with us this morning and that’s their right and prerogative. The law is also very clear that a person can give their consent to one kind of sexual activity but not another in a single situation. For example, someone might consent to vaginal but not anal penetration, or they might consent to sex with a condom but not without one. Again, this is common sense."