Often, teenage couples engage in sexual conduct as part of an intimate relationship. This may occur before either participant has reached the age of consent, or after one has but the other has not. In the latter case, in most jurisdictions, the person who has reached the age of consent is guilty of statutory rape. In some jurisdictions (such as California), if two minors have sex with each other, they are both guilty of engaging in unlawful sex with the other person. The act itself is prima facie evidence of guilt when one participant is incapable of legally consenting.