Jay-Z jayvibecover.jpg Jay-Z's marriage to Beyonce Knowles may be the worst-kept secret in the world - but the Jiggaman's still not willing to talk about it!

"I just think it's really a part of your life that you gotta keep to yourself," Jay told Vibe Magazine in an interview for their big 15th anniversary issue. "You have to have something sacred to you and the people around you."

"I shared so much of my life," the rapper added. "I should have something to hold on to."

Wow - sounds like Jay's come an awfully long way since the days of "Money, Cash, Hoes"!