The selfless, billionaire couple never had a prenup.

According to the TMZ site, Melinda and Bill Gates’ divorce could be complicated by the lack of a prenuptial agreement.

The couple announced their separation on Twitter a month ago and, despite being one of the richest couples in the world, they never signed a prenuptial contract to facilitate the division of their assets.

Wealthy couples typically sign this agreement for financial safety and protection.

After 27 years of marriage, three children and a multi-million dollar corporation, the publication says it doesn’t take a rocket scientist to understand that this divorce will be costly and ‘potentially messy’.

In this case, material assets would be divided 50 percent, and this indicates that Melinda Gates could become the second richest woman in the world, receiving $ 73 billion after the divorce.