Transcript for Florida prosecutor delivers life-changing opening statement
Finally tonight, over the years we have seen a lot of creative wedding proposals but nothing quite like this one. Inside a courtroom. The biggest case of their lives and love is on the docket. You're about to watch the happiest life sentence ever handed down in a Florida courtroom. And today, I have the privilege of representing myself. Reporter: That's state prosecutor Brandon dinetz. Also in court -- his girlfriend Jennifer Lettman. She's also a lawyer and is there -- she thinks -- to watch his opening statement. But suddenly, she sees the jury and realizes it's made up of her family and friends. Love can't be defined by mere words alone. Reporter: Brandon making the case for his love to Jennifer, and then conferring with his co-counsel, who hands him the ring. Jennifer, you are my best friend and the love of my life. Will you marry me? He's just -- whether it's big or small, he's very, very thoughtful, so looking back, none of this surprises me. But I was incredibly surprised. Reporter: The planning took Brandon five months, making sure he didn't violate any legal ethics and he pulled it off during the court's lunch break. There was not going to be any taxpayer money or taxpayer dollars involved with this production. Reporter: But there was a real judge who volunteered her time, and after all the kissing and hugging, made this ultimate ruling. You are now sentenced to life. You heard it. The two of them sentenced to life. We thank you Brandon and Jennifer for sharing that story. We thank you for watching. I'm Tom llamas in New York.
This transcript has been automatically generated and may not be 100% accurate.