A former Lithuanian police detective launched a jealous attack on his partner, who fled her home in Longton leaving a trail of blood through the house.
Tomas Peleckis, 34, was born in the UK but travelled to Eastern Europe where he trained in law and policing and worked as a detective before returning to Ireland and settling back in the UK.
On April 14, after a heavy vodka drinking binge, he set upon his partner of 18 months in her home in Longton, leaving her terrified and with a fractured eye socket.
Preston Crown Court heard the woman had been out in Manchester on the day of April 14.
When she returned home she went next door to a party with her neighbours.
Peleckis also joined the group but friends noticed he was ignoring his partner and would not speak to her when she approached him.
The woman left at around 11.30pm and went to bed but awoke to find Peleckis in her living room.
She said he went “absolutely mad” and started punching her to the side of her head.
She ran out of the house to seek help from her neighbours leaving a trail of blood on the walls and floor of her living room and hallway.
The woman’s neighbours contacted the police and the woman was taken to Royal Preston Hospital where she was found to have a fracture to her left eye socket and tenderness to her chest wall.
She has now made a full recovery and did not need surgery but the incident has left her extremely frightened, the court was told.
Darren Lee-Smith, defending, told the court Peleckis was shocked and disgusted by his actions.
Following his arrest, the former detective told officers: “It was the first time. I can’t believe it myself now. I want to cry. I am so sorry.”
Mr Lee-Smith said the defendant could not offer any explanation other than the combination of alcohol and jealousy and an inability to deal with a meaningful adult relationship.
He said his client had been jealous his partner had chosen to socialise with others rather than spending time alone with him on the evening of the attack.
He pleaded guilty to causing the woman grievous bodily harm (GBH).
Recorder Mark Ainsworth said: “You are familiar with the legal system through your work as a police officer.
“The offence in this case is completely out of character.
“People who know you are shocked and surprised that you behaved in this way.
“There is no excuse for this sort of behaviour.”
He jailed Peleckis for 16 months and made a restraining order banning him from contacting his victim or entering the village of Longton.