The following evidence is not admissible in any proceeding involving an alleged sexual offense except as provided in subdivisions (b) and (c):

Evidence offered to prove that a victim engaged in other sexual behavior; or

Evidence offered to prove a victim's sexual predisposition.

In a proceeding, the following evidence is admissible, if otherwise admissible under these rules:

evidence of specific instances of a victim's sexual behavior, if offered to prove that someone other than the accused was the source of semen, injury, or other physical evidence;

evidence of specific instances of a victim's sexual behavior with respect to the person accused of the sexual misconduct, if offered by the accused to prove consent or if offered by the prosecution; and

evidence the exclusion of which would violate the accused's constitutional rights.

A party intending to offer evidence under subdivision (b) must -

file a written motion at least 5 days prior to entry of pleas specifically describing the evidence and stating the purpose for which it is offered unless the military judge, for good cause shown, requires a different time for filing or permits filing during trial; and

serve the motion on the opposing party and the military judge and notify the victim or, when appropriate, the victim's guardian or representative.

Before admitting evidence under this rule, the military judge must conduct a hearing, which shall be closed. At this hearing, the parties may call witnesses, including the victim, and offer relevant evidence. The victim must be afforded a reasonable opportunity to attend and be heard. However, the hearing may not be unduly delayed for this purpose. The right to be heard under this rule includes the right to be heard through counsel, including Special Victims' Counsel under section 1044e of title 10, United States Code. In a case before a court-martial composed of a military judge and members, the military judge shall conduct the hearing outside the presence of the members pursuant to Article 39(a). The motion, related papers, and the record of the hearing must be sealed in accordance with R.C.M. 1113 and remain under seal unless the military judge, the Judge Advocate General, or an appellate court orders otherwise.

If the military judge determines on the basis of the hearing described in paragraph (2) of this subdivision that the evidence that the accused seeks to offer is relevant for a purpose under subdivision (b)(1) or (2) of this rule and that the probative value of such evidence outweighs the danger of unfair prejudice to the victim's privacy, or that the evidence is described by subdivision (b)(3) of this rule, such evidence shall be admissible under this rule to the extent an order made by the military judge specifies evidence that may be offered and areas with respect to which the victim may be examined or cross-examined. Any evidence introduced under this rule is subject to challenge under Mil. R. Evid. 403.

For purposes of this rule, the term "sexual offense" includes any sexual misconduct punishable under the Uniform Code of Military Justice, federal law or state law. "Sexual behavior" includes any sexual behavior not encompassed by the alleged offense. The term "sexual predisposition" refers to a victim's mode of dress, speech, or lifestyle that does not directly refer to sexual activities or thoughts but that may have a sexual connotation for the fact finder. For purposes of this rule, the term "victim" includes an alleged victim.