The source is a very close pal. See the revelations below...
"While she lets Jay-Z be the alpha male most of the time, Beyonce takes charge when it's Booty Thirty. She loves tying him up... She's such a demure woman in public, but behind bedroom doors she's absolutely wild."
Then the big one, Beyonce "even has sex with Jay-Z before every performance to help calm her nerves."
So 'small' Beyonce will tire 'big' Jay-Z up? Na wa for this source o!!!!!