According to the filing, a prenuptial agreement was signed by the pair in November 2013, one month before their New Year’s Eve wedding.
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Cuoco, 29, and Sweeting, 28, “mutually decided” to split after 21 months of marriage, her rep told PEOPLE exclusively on Friday.
The court documents also revealed that the actress and her tennis pro were separated as of Sept. 3.
However, the couple had been hit with rumors of relationship trouble since April.
“The few times Kaley and Ryan were out together, the tension was noticeable,” a source recently explained to PEOPLE. “You could tell the honeymoon phase had ended.
“They both seemed miserable.”