I didn't even catch the insecurity at the end, when he fiddles with his expensive watch, upon it sinking in that "all 3 of us suddenly know the love of my life was eyeballing lebron, caught". Awkward all around. Even if you're as rich as Jay-Z, a dude like Lebron - one of the best athletes the human race has ever seen, sweating in her direction at the peak of his playoff run... Beyonce is going to be sprung, no doubt about it.
Kinda how a dude would react to a freshly-fcked jessica biel, crawling over to a dude and his date at the movie theater. Dude's mouth is going to drop for a moment as the chemicals/pheromones kick in. He'll collect himself and look away, but his woman is going to catch on pretty quick. It's all primal... can't really blame ppl for it. Jay-Z should realize this is gonna happen when you bring your woman to a game where 10 half-dressed, world class athlete millionaires in their prime are chasing and touching each other. Not that bright to bring your woman to that, to be honest. Imagine a girl saying "Honey, let's go watch 10 hot sweaty millionaire girls in their early 20s wrestle for 3 hours."