Answer:
Aaliyah and R Kelly were not cousins. He was Aaliyah's producer / mentor on her debut album "Age Ain't Nothing But A Number." In 1994, and then again in 2005; Vibe Magazine posted a copy of a marriage license between the two that showed either Aaliyah falsely stated her age as 18, or either R Kelly could have very well persuaded her to lie if he didn't go to the courts solo and lie about her age him self. Whatever the reason, in 1995 the marriage was quietly but quickly annulled after months of the union being posted on blog sites, newspapers, etc. After that stint, Aaliyah parted ways from R Kelly and began working with Timbaland and Missy for the rest of her career, and R Kelly himself continued establishing him self as a solid artist in the music industry.