The Brief Rebecca Sneed, wife of Lyle Menendez, is denying rumors of an alleged affair that led to the pair's separation. According to the Associated Press, the two had known each other for about 10 years before they wed.Rebecca Sneed, the wife of Lyle Menendez, is revealing the status of her marriage to the convicted killer. RELATED: Menendez brothers to appear at court hearing on Monday: What you need to knowSneed and the younger Menendez married in 2003. Sneed's announcement comes on the heels of the Menendez brothers' first court appearance in decades on Monday. The highly-anticipated court hearing will allow limited public attendance, with just 16 courtroom seats available through a lottery.