Former California Gov. Arnold Schwarzenegger and his wife, Maria Shriver, have announced that they are separating. 

In a public release, the couple said they had arrived at the decision after "a great deal of thought, reflection, discussion and prayer." According to MSNBC, while they're living apart, the couple will continue to parent their four kids together. 

"This has been a time of great personal and professional transition for each of us," they added. 

Schwarzenegger left office in January and has been increasingly busy rebuilding his career in the entertainment industry while simultaneously remaining involved in environmental issues. In March, he traveled with movie director James Cameron to Brazil to see firsthand the proposed site of the Belo Monte hydroelectric dam — a controversial project that would destroy 600 acres of rainforest and displace tens of thousands of river-dwellers.

Since leaving office, he has announced the launch of a new cartoon series called "The Governator" and his appearance in three upcoming films. 

According to TMZ, it was the combination of these projects following a lengthy and involved political career that was the last straw for Shriver. 

"Sources say the couple has spent "very little time together" for several years," the site reported. "Maria was frequently absent from Sacramento while Arnold was governor.The situation got worse once Arnold left office and decided he wanted to resurrect his movie career. Maria felt Arnold was becoming more erratic — more "unstable."

Whatever the reasons, I wish them the best in working this out — especially after 25 years of marriage. 

Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Schwarzenegger and Shriver split
After 25 years of marriage, they publicly announce that they are separating.