Dude must really consider himself the unluckiest guy in the world right now. Of THOUSANDS of peoples he was picked ...
That said, he has only himself to blame. Beyond the adultery itself (wich i do not condone), dude clearly didn't think long. He should had know this band do these kiss cam thingy before going, and clearly they are not the first shown on screen, so he should had know better than to hold her. If he didn't, the risk of being on screen would had drop. And if he had been shown anyway, if nothing "flirty" was displayed the results would had been less damaging. He could make something up.