Miranda Lambert didn't want kids?

London: Country singers Blake Shelton and Miranda Lambert reportedly split because she was not ready to have children and her hectic schedule kept them apart for long periods of time.

The couple announced yesterday they had separated after four years of marriage and it has now been claimed that they had different ideas on when to start a family, reported Female First.

"He is eager to have children, but she really enjoys not being tied down. I think they both were off on what the time frame would be," an insider said.

The source also said the 31-year-old beauty's more rigorous touring schedule kept the pair apart from long periods of time.

"They are never together, and he was wanting them to move close to being together. She really loves her career and touring. She has the ability to go and record albums when she wants and to tour."

Lambert, whose divorce from 39-year-old Blake was reportedly finalised just hours after they announced their separation, recently insisted spending so much time apart from "The Voice" coach wasn't "a big deal".