(a) Unlawful voluntary sexual relations is:
(1) Engaging in any of the following acts with a child who is 14 or more years of age but less than 16 years of age:
(A) Voluntary sexual intercourse;
(B) voluntary sodomy; or
(C) voluntary lewd fondling or touching;
(2) when the offender is less than 19 years of age;
(3) when the offender is less than four years of age older than the child;
(4) when the child and the offender are the only parties involved; and
(5) when the child and the offender are members of the opposite sex.
(b) Unlawful voluntary sexual relations as defined in:
(1) Subsection (a)(1)(A) is a severity level 8, person felony;
(2) subsection (a)(1)(B) is a severity level 9, person felony; and
(3) subsection (a)(1)(C) is a severity level 10, person felony.