About the breakup thing, I heard Jay cheated on her like a year ago and she almost divorced him. So I'm pretty sure it's a real story. But it's not only about her relationship with Jay but also her dad, granddad and relationships in general.. this subject was always very common in her music (Irreplaceable, Single Ladies, Ring Alarm, etc..).
First and foremost it's art. And it's beautiful, even if it's ugly. I'm also sure that Jay was aware of it and approved it all (Bey most likely left him no choice
but yeah).. Jay understands and appreciates art, sure he's a business man, but he's also a great artist himself, I feel like people are quick to forget that.