Egos, hey.

Power couple marriages are a whole different ball game, so it should come as no surprise that a legally-binding prenup is usually set out and signed.

Even a flexible relationship agreement is put into writing.

Speaking to Business Insider, Handel Group co-president and life coach Laurie Gerber explained that:

Two egos in a marriage can be great if all the important issues are agreed upon up front.

But in many cases, it’s not always about the money. From sexual to romantic needs, family boundaries, and who pays for what when and how, putting it all into writing can give a marriage a better chance of survival.

Gerber explains that most marriages end due to cheating, but:

“Couples who face the reality of this threat head-on and deal with it stand the most chance of success.

“Don’t be afraid to put it all in writing to refer back to as a living breathing document,” she says. “And plan to have meetings about how you are running your marriage and family just as you would for your company or any other project you care about profoundly.”

So let’s take a look at four couples who have some pretty interesting prenup agreements:

Nicole Kidman and Keith Urban agreed not to tolerate drug or alcohol abuse

Actress Nicole Kidman and singer songwriter Keith Urban reportedly signed a prenup stipulating that Urban, who struggled with alcoholism and cocaine abuse, would receive $600,000 a year for every year they are together, but only if Urban refrained from using illegal narcotics or drinks excessively.

The couple married in June 2006, and in October 2006 Urban checked into rehab for an alcohol addiction.

“Definitely we both met each other exactly at the right time,” Urban told People magazine in 2007. “She said early on that she wanted to be brave with me. I feel there was something else at work, bringing us together and then just continuing to watch over us.”

The couple are worth an estimated $205 million.

Jay-Z and Beyoncé treat motherhood like a job

Rapper Jay-Z and singer Beyoncé reportedly signed a prenup that gives her $5 million for each child they have together. The prenup also stipulated that Beyonce would receive $10 million if the marriage ended before two years and $1 million a year for every year they remained married up to 15 years.

The couple have also reportedly updated their relationship agreement with a postnup detailing custody, how assets would be split, and setting up a trust fund for their children.

The couple are worth an estimated $1.16 billion.

Jessica Biel and Justin Timberlake have a clause about cheating

Actors Jessica Biel and Justin Timberlake reportedly have an infidelity clause in their prenup that states Biel will receive $500,000 if Timberlake cheats.

The couple are worth an estimated $248 million.

No trust there, hey? Look at JT’s eyes.

Mark Zuckerberg and Priscilla Chan agreed to spend more time together

Before marrying in 2012, when Priscilla Chan moved to Palo Alto, California, she and Facebook CEO and founder Mark Zuckerberg drew up a relationship agreement.

In it, Zuckerberg agreed to take her on a date once a week and spend 100 minutes of alone time each week with her outside the office or his apartment.

The couple are worth an estimated $74.5 billion.

Insane, I tell you.

As with every prenup post, a mandatory Gold Digger listen is required:

[source:businessinsider]