"I left my home, family and everything to be with you and three days later you say that if you knew marriages were like this, you wouldn't have got married," Anni wrote to Shrien in an email.
"I don't want an insecure man or a man whose feelings doesn't come naturally that you have to force yourself," read another mail.
"Because we had a Bollywood wedding, it doesn't mean we are Bollywood actors and just pretend everything is good when it isn't," Anni said in a third e-mail.
Shrien's marriage life has been a focus of the trial, with the prosecution arguing that he is a bi-sexual and hired hitmen to kill his wife.
Three hitmen have been sentenced for the crime. One of them died in prison soon after the trial started last month.
Judge Jeanette Traverso had earlier in the trial stopped a gay sex worker from testifying against the Indian-origin British millionaire, citing it as being irrelevant.
Shrien, who lost a four-year long battle to avoid extradition to stand trial, has pleaded not guilty to five counts against him.
