Whats sad about this is his new wife Huma. She has no reason to believe he ever intended to be faithful.
That said, I think it was a marriage of convenience. Weiner was being set up for a post in Hillary's cabinet, and Huma would have a reason to stay close to Hillary. those pesky lesbian rumors would be dispelled, and everyone would be happy.
Now its all in ruins thanks to what Weiner whipped out. He's out of a cabinet post. Huma looks like a fool if she stays with him. and Hillary has to make a new set of deals.