A woman damaged a door when her boyfriend locked her out after accusing her of cheating on him.
Natalie Shorrocks, a 26-year-old bar worker, of Branstree Road, Mereside, pleaded guilty to causing damage.
She was ordered to pay £500 compensation with £85 costs by Blackpool magistrates who imposed no other penalty.
Pam Smith, prosecuting, said Shorrocks and her partner argued about where she had been overnight on October 7.
She went out for a cigarette, then found he had locked her out. She damaged the door lock trying to get back in.
Imran Majid, defending, said his client, who had no previous convictions, had called the police saying she wanted him out after he accused her of cheating on him.