I'm not condoning cheating at all, but if you're a billionaire with endless connections around the world, why wouldn't you just go to an escort if you can't keep it in your pants.
I know things are different when you're only thinking with your johnson but jeez, showing up with the same woman in front of the media many times and even displaying affection in front of a camera (there is pictures of them with light body contact afaik), what did he think was going to happen?
Being seen in public so often with a mistress seems extremely arrogant or wanting to get caught.