Billy Ray Cyrus ends marriage with Firerose, says "She isn't the person he thought he married"

There is more complexity to Billy Ray Cyrus' separation from Firerose than initially apparent.

A source informed PEOPLE that the "Achy Breaky Heart" artist, 62, is ending his marriage to his wife — whose real name is Johanna Rose Hodges — after seven months because "she isn't the person he thought he married."

“He believes that she married for other reasons but love,” the insider said. “He believes she married him so he can take care of her financially. They’ve had drama and trust issues about money.” 

“He wants her out of his life,” the source added. “They have a prenup. He’s disappointed right now, but surely will turn it around quickly. He tends to be a very positive guy.” 

Cyrus' representatives and Firerose's lawyers did not immediately respond to PEOPLE's request for comments.

This development follows Cyrus' filing of an emergency motion in a Tennessee court for a temporary restraining order to prevent Firerose, 37, from making any "unauthorized" use of his personal and business credit cards and accounts.

In the court documents, he accused Firerose of making $96,986 in unauthorized charges on his business account, including $70,665 for her attorneys. He also expressed concern that she might make further "fraudulent, unauthorized charges" since she had access to his "information."