I think the big issue for the 15-year-old kid is that his life would never be his own again. In this day and age, he would never escape being in the news, being hounded, and being known as the kid whose real dad is a gay politician who once had an affair with his student. They always say, be careful what you put out there online. The media certainly wouldn't be willing to leave him alone, and even after it died down in immediate news, it would be forever viewable as info on the internet. The kid's 15. That would be pretty damn awful, and I had no problem with Dex trying to find a way to protect his identity.
I did, however, think the resolution to the issue was lame. What's to stop the sleazy brother from further trying to capitalize on it with a news network or some other outlet? Just because the politician decides to step down and the other side of the aisle promised not to say anything, doesn't mean it will never get out. It could all be for nothing.
Also, I think the husband's freakout about them being "off message" was ridiculous. What's more on message for "Be you, be true" than being able to say, "When I was in the closet, I did all sorts of foolish, over-the-top, over-the-line things in order to hide who I was. It was all out of fear, and no one should ever have to feel that way about themselves. It's a horrible headspace to be in. But now I can stand proudly and I'm no longer tied to that fear because I'm finally honest about who I am and can truly be myself."