Texas state Sen. Angela Paxton, the wife of Republican Texas Attorney General Ken Paxton, filed for divorce on Thursday, seeking to end 38 years of marriage as her husband campaigns for the U.S. Senate.

Sen. Paxton filed the divorce papers in the Collin County courthouse Thursday morning. In the filings, she said the attorney general committed adultery and that she blames him for the breakup of their marriage. The court documents also revealed that the couple separated on or about June 1 of last year.

Texas state Sen. Angela Paxton said Thursday she had filed for divorce from her husband, state Attorney General Ken Paxton, who is challenging U.S. Sen. John Cornyn in a Republican primary.