Lyle Menendez and his wife, Rebecca Sneed, quietly ended their marriage after more than 21 years together, but she remains a key figure in his life despite rumors of a cheating scandal Sneed says are baseless, PEOPLE has learned.

Rebecca Sneed, the wife of convicted murderer Lyle Menendez, has confirmed that the couple has been separated for some time. In a Facebook post on Friday, Sneed clarified that while they are no longer together, they continue to maintain a close relationship, referring to themselves as "best friends and family."

Lyle Menendez’s wife, Rebecca Sneed, is setting the record straight on their relationship status. The attorney wrote via Facebook Friday that she and her husband have been “separated for awhile [sic] now” (per E!