LOL---when I saw JUNE, I was thinking last year. That is fast! But it is possible. What is not possible is that he met another person so quickly, dated, and developed the relationship to the point of marriage so quickly without overlap!
But I've seen it happen before. I know a witness couple that married within weeks of his divorce being final. So obviously they were dating while he was still legally married. They didn't do it in the KH though, they went to Vegas. But neither got into any trouble.