A person may not engage in: sexual contact with another without the consent of the other; except as provided in § 3–307(a)(4) of this subtitle, a sexual act with another if the victim is 14 or 15 years old, and the person performing the sexual act is at least 4 years older than the victim; or except as provided in § 3–307(a)(5) of this subtitle, vaginal intercourse with another if the victim is 14 or 15 years old, and the person performing the act is at least 4 years older than the victim. Except as provided in paragraph (2) of this subsection, a person who violates this section is guilty of the misdemeanor of sexual offense in the fourth degree and on conviction is subject to imprisonment not exceeding 1 year or a fine not exceeding $1,000 or both. On conviction of a violation of this section, a person who has been convicted on a prior occasion not arising from the same incident of a violation of § 3–303, § 3–304, §§ 3–307 through 3–310 of this subtitle, § 3–311 or § 3–312 of this subtitle as the sections existed before October 1, 2017, § 3–315 of this subtitle, or § 3–602 of this title is subject to imprisonment not exceeding 3 years or a fine not exceeding $1,000 or both. If the State intends to proceed against a person under subparagraph (i) of this paragraph, it shall comply with the procedures set forth in the Maryland Rules for the indictment and trial of a subsequent offender. Unless specifically charged by the State, a violation of this section may not be considered a lesser included crime of any other crime. A sentence imposed under this section may be imposed separate from and consecutive to or concurrent with a sentence for any crime based on the act establishing the violation of this section.