A jilted policeman left a sex toy on his ex girlfriend's car after he found out she had an affair, a court heard.
PC Adam Merriman was accused of leaving the toy in an Ann Summers bag on Alex McLaren's car outside Wembley Police Station, where they both worked.
It came after the 29-year-old had checked Ms McLaren's phone and discovered she had kissed a colleague on a drunken work night out, Westminster Magistrates' Court heard. He wanted to "embarrass" her after she ditched him, it was said.
Merriman was also said to have shoulder barged her in a door way at work when they were both on shift on the day of the 2016 FA Cup semi-final between Everton and Man Utd on 23 April last year.
He was accused of harassment without violence and assault by beating.
The court heard Merriman and Ms McLaren, who were in the same response team, had met while training at Hendon police training school and had been dating for two years.
I was completely embarrassed, I was worried people at work had seen it
They were together when Ms McLaren drunkenly kissed her colleague before going back to Merriman's flat. Merriman discovered what she had done after he checked messages on her phone and discovered the affair.
Ms McLaren said that, following the discovery, Merriman had parked his car next to hers at work three times in one week. She was with a colleague when she noticed two carrier bags on her car bonnet on April 4 last year.
One contained photographs, cards and receipts from their relationship and another with the Ann Summers bunny logo on it.
"One was from when we were in Mexico, it had all the birthday cards, Christmas cards, valentines day cards, cinema tickets and restaurant receipts in," said Ms McLaren.
"The other bag was an Ann Summers carrier bag and in it there was a vibrator. I was completely embarrassed, I was worried people at work had seen it."
Ms Mclean also told the court that Merriman had cheated on her on a number of occasions and said she had been left scared to leave the station when it was dark and was constantly looking over her shoulder.
Merriman, who has no previous convictions, was acquitted of harassment without violence and assault by beating.
District Judge Mike Snow said he did not find the text messages to be harassment, as she had replied many times, and explained that although he did find the leaving of the personal items including a vibrator harassment, the way the prosecution had brought the case meant that had to be dismissed.
"The problem the prosecution face is that just leaves the placing of the bags on her car on the 4th April as the conduct but a single action cannot be a course of conduct," he said.
"Very personal items, pictures, cards, cinema receipts, were left as well as the item from Ann Summers, that is harassing to her but it is not sufficient. It is my duty to find Mr Merriman not guilty of that charge as a result."
Merriman no longer works at Wembley Police Station.