(a) Any person over 18 years of age who perpetrates under circumstances not amounting to rape in the first degree, an act of sexual intercourse or sodomy with a person not the perpetrator's spouse who is at least 16 years but less than 18 years of age, and the perpetrator is 5 years or older than the victim, is guilty of rape in the second degree and shall be imprisoned not more than 10 years.
