So, my ex and the guy she cheated with (who had also been married) have "officially" been dating since March - though one could really say that they've been together for over two years. Snark aside, I expected that they would date eventually and figured they might get engaged/married.
Even though it's something that I knew was a possibility, it still hurts a bit. Mind you, I am wonderfully happy in a new relationship, but there is still something about that old stuff that sucks.
Note that they're horrible, disturbed people who have no regard for others around them or social decency. They'll likely have another big wedding like they both had an invite all the same people they did for their first ones! lol