R.I. Gen. Laws § 12-17-18: Restrictions on the defense of diminished capacity.

A defendant does not suffer from reduced mental capacity based solely on the discovery of, knowledge about, or potential disclosure of the victim’s actual or perceived gender, gender identity, gender expression, or sexual orientation, including under circumstances in which the victim made an unwanted, non-forcible romantic or sexual advance toward the defendant, or if the defendant and victim dated or had a romantic or sexual relationship.