Here at Guinness World Records HQ we're getting swept up in the romantic spirit of Valentines Day.

And we're not the only ones - in Thailand, 14 lip-locked couples have taken part in a contest for the longest kiss.

Among the contestants was an elderly couple with the surname Yomjinda, aged 74 and 72 years old.

The long-time lovers attended as part of the celebrations for their 50 th wedding anniversary.

The nine couples were trying to surpass the world record of 50 hours and 25 minutes, set by Nonthawat Charoenkaesornsin and Thanakorn Sitthiamthong last year- who returned to try and beat their own personal best.

While we await confirmation to see if any of the couples beat that time, here are ten of the most lovey-dovey world records that are sure to make you swoon.

Oldest love poem
Archaeologists have dated a love poem written on a clay tablet to the time of the Sumerians, who invented writing ca. 3500 bc. It was given the rather unromantic name of "Istanbul #2461" and is thought to have been recited by a bride of the Sumerian king Shu-Sin, who ruled between 2037 and 2029 bc. It begins: Bridegroom, dear to my heart, Goodly is your beauty, honeysweet, Lion, dear to my heart, Goodly is your beauty, honeysweet.

Highest box office film gross for a romance film
Titanic (USA 1997), has taken a total gross of US$ $1,834,165,466 (£1.297 billion), since its release at the box office on 19 December 1997. The film, directed by James Cameron (Canada), featured an ill-fated romance between Leonardo DiCaprio (USA) and Kate Winslet (UK).

Oldest couple to marry - aggregate age
On 1 February 2002, François Fernandez (France, b. 17 April 1906) and Berthe Andrée "Madeleine" Francineau (France, b. 15 July 1907) exchanged marriage vows at the rest home Le Foyer du Romarin, Clapiers, France, at the age of 96 years 290 days and 94 years 201 days, respectively. Their aggregate age at the time of the ceremony totalled 191 years 126 days.

Longest engagement
The longest engagement on record was between Octavio Guillan and Adriana Mart¡nez. They finally took the plunge after 67 years in June 1969 in Mexico City. Both were then aged 82.

Earliest box of Valentine's Day chocolates
Richard Cadbury (UK), the eldest son of John Cadbury, founder of the world famous company, created the first known heart-shaped box of chocolates for Valentine's Day 1868. He was a pioneer in chocolate box design and often used his own paintings to make the lids of the boxes more appealing.

Longest screen kiss in a TV show
The longest screen kiss in a TV show is 3 minutes 22 seconds and was achieved by Sean Lowe and Lesley Murphy (both USA) at the Guinness World Records Museum in Hollywood, California, USA, as part of an episode of ABC's "The Bachelor," filmed on 30 September 2012.

Longest hug
The longest hug lasted 24 hr 33 min and was achieved by Ron O'Neil and Theresa Kerr (both Canada) at Centennail Beach in Barrie, Ontario, Canada, from 12 to 13 June 2010.

The attempt was a fundraising effort for the Juvenile Diabetes Research Foundation.

Longest marriage
Herbert Fisher (USA, b. 10 June 1905) and Zelmyra Fisher (USA, b. 10 December 1907) were married on May 13, 1924 in North Carolina, USA. They had been married 86 years, 9 months, and 16 days as of 27 February 2011.

Most marriage vows renewals - same couple
While they may be some way off of Herbert and Zelmyra record, Lauren and David Blair have celebrated the most vow renewals -exchanging vows over 100 times after only having been married 27 years.

Most Wedding Vow Renewals - Main

Most expensive diamond per carat
A 7.03-carat fancy vivid-blue modified rectangular brilliant-cut diamond sold at Sotheby's in Geneva, Switzerland, for a record per-carat price of $1,375,938 (£854,705) on 12 May 2009.