🎧Did I Break The Girl Code On Dating Someone She Dated? Leo and Rebecca Buzz Question

Leo and Rebecca Buzz Question - Girl Code Question? So, I had NO idea that one of my friends dated a guy that I just went out with. They apparently dated last year for a month or so on the downlow. I had no clue. I would have never dated him if I knew. SO, now that I do know, do I stop seeing HIM!??