It is not. It is a crime of violence, a vicious hostile attack intended to hurt and to humiliate. Sex is the weapon. Sexual Assault is a felony. Simply defined, it is oral sexual conduct or sexual intercourse, without the victim's consent, and with the use or threat of force.
Sexual assault can happen anywhere, anytime.
Most rapes are planned to the extent that the offender knew the rape would occur. Most rapes occur between acquaintances. Regardless of the circumstances, any time two people have sex without both partners expressly consenting, it is rape, and it is a crime. Sexual Abuse is defined as any sexual contact, not necessarily intercourse, with any person without that person's consent. Consent is the defining boundary between conduct that is permissible and conduct that is criminal.