A number of emails, allegedly written to Roshan from Kangana's side, were leaked to a newspaper which appear to show that the affair was one-sided.
The lawyer said Kangana's sister, Rangoli had informed Hrithik that the actress' account was hacked and she had even suggested that they should file a joint complaint.
The lawyer also accused Roshan of diligently storing and maintaining these "unverified and fabricated emails for future use as is seen now. It has also been observed that he willfully fails to authenticate the genuineness of any of these emails which he received from a hacked account".
More From This Section
He claimed Hrithik abandoned his complaint with police for 14 months before taking it up again this year in February while sending a defamation notice to Kangana for calling him a "silly ex".
29-year-old Kangana is set to record her statement in the fake imposter case, filed by Hrithik, on April 30 but her lawyer said the actor did not wait for it and instead started showing media these unverified and fabricated emails to prove that Kangana was mentally not "stable."
What started as a complaint against an alleged imposter by Hrithik has turned into an ugly public and legal battle between the two stars, with both coming up with allegations and counter-allegations against each other every other day.
Hrithik, who was the first to send the legal notice to Kangana, has demanded that she apologise in a press conference publicly and clear the air about their alleged affair which he firmly refutes. Kangana had replied by sending a counter-notice to the actor and alleging him of 'slut-shaming' her by circulating private mails and photos.