Why is everyone so concerned? I mean, really!? Who gives a rats ass what anyone does behind closed doors? Ok, he was a bit of a dork to send a picture of himself but why care? It's between him, his wife and his girlfriend(s).
What makes this funny is that in most other civilized countries people turn a blind eye to the escapades of their elected officials unless it's adversely affecting the duties of their office/position.
Seriously, there are hundreds, if not thousands, of people having affairs everyday. Some are CEOs of major multinational companies. Do we care? No. So why care when a politician does it? As long as his work is not affected (or he's using tax $$$ on gifts, trips, etc) I don't give a shit.