Word on the street is that this marriage has been on the rocks for awhile now. But I'm still not convinced. The lyrics that Beyonce flipped during their show in Ohio kinda allude to a little trouble in paradise!
In the song she changed the lyrics from "been riding with you for six years," to "been riding with you for 12 YEARS" - coincidentally the length of time she's been with Jay Z.
Now my hypothesis is that the song was about Jay all along, written when they were only 6 years in, so she naturally reworked it to fit the length of time they've been together now, duh!!