Dine 'em or ditch 'em: Valentine's Day UK-style

You Are Fired - Valentine's Day

Valentine's Day is just around the corner, but tomorrow marks the day when the UK will start spending $2.9 billion for this year's festivities.

If you thought you'd just recovered from last year's "Black Friday" , then it's time to start digging out your wallet again for Red Saturday and fearing the worst on Red Tuesday.

Several retailers have decided to call tomorrow "Red Saturday" -- the day spouses and partners rush out to the shops to buy their other half a Valentine's Day gift.

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In the U.K. alone, it is expected that £1.9 billion ($2.91 billion) will be spent for the day , according to a new study by eHarmony, an online dating platform.

Out of the £1.9 billion spent over the next week, the most expensive item on the menu will be dinner out (£557 million) while U.K. lovers will spend an extra £192 million on jewelry and £57.6 million on cards.

The average spend on Valentine's Day will be around £53 per person, however men will spend more (£70.47 on average) compared to their female partner (£39.58). Londoners however are predicted to spend the most, with a predicted splashing-out of £86.02.

eHarmony compiled the data from an index using Google Trends search trends data relating to love and dating, social media trends, and the site's registration data.

Americans are the biggest of "big spenders" with a predicted $18.9 billion expected to be spent this year , an average of $142.31 (£92.82) per person. Confectionary will be the favorite; as more than 53 percent expect to spend their money on chocolate treats for their other half, according to the National Retail Federation.

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Tomorrow may mark the start of the Valentine's Day spending spree, but if you haven't bought your loved one a gift yet, it might be best to hold off... until "Red Tuesday."

Four days before Valentine's Day (10th February), this year dubbed as "Red Tuesday," is the most likely day an individual will choose to break up with their other half, according to a new report by Illicit Encounters.com, the U.K.'s biggest secret dating site for married people.

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The week before Valentine's Day can be seen as a crucial decision point for relationships , its survey found. Either Valentine's Day acts as a red light to reawaken a person's anxiety or antipathy about their other half, or the commercial holiday solidifies a person's love for their partner.

Having surveyed 3,000 people, 22 percent of had broken up with their other half during the week leading up to Valentine's Day, while almost 75 percent admitted to having made a "clean break" around this time.

If that wasn't bad enough, breaking up in person is a rapidly going out of fashion, with 75 percent of people using their phone instead, including using Whatsapp, Twitter and Facebook as preferred methods, says the report.

Read More The world's most expensive divorces

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