A new UK campaign, starting on Sunday, aims to raise awareness about the growing problem of online dating fraud.
The campaign, Date Safe, suggests criminals are using love letter templates and an online search could flag up some of the stock phrases.
Police say the average dating scam victim is aged 49 and loses £10,000.
The new report, published by the City of London Police and the National Fraud Intelligence Bureau, also reveals that on average, money is transferred within 30 days of initial contact with the perpetrator.
In a dating scam, criminals pose as potential matches and contact people seeking romance on dating platforms - then, after a period of correspondence and sometimes also phone contact, they start asking for money using various excuses.
The police report, which analysed data from the Action Fraud helpline, estimated that in the UK a victim files a report about dating scams every three hours.
Of those who stated their gender, 61% of the victims were female and 66% of the suspects were male, it said.
While most activity occurred on dating websites, the majority of the 15% that did not was carried out via Facebook, the report claimed.
It also said that 213 people admitted they had been a victim of a dating scam more than once.