In Pictures: Love is in the air as world marks Valentine's Day

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Heart-shaped balloons, red roses and even tattoos were in high demand on Wednesday as people - and animals - around the world celebrated Valentine's Day.

Philippines Valentine's Day
Vendors make the rounds of a busy street to sell heart-shaped balloons in Paranaque, south-east of Manila, Philippines (Bullit Marquez/AP)
Philippines Valentine's Day
This woman's other half is in for a flowery surprise (Bullit Marquez/AP)
Philippines One Billion Rising Dance
Meanwhile, thousands of students and staff from the Catholic-run St Scholastica's College in Manila used the day to dance en masse on their campus to highlight the global issue of violence against women and children (Bullit Marquez/AP)
Afghanistan Valentine's Day
Young people in Afghanistan, such as this man in Kabul, have also marked the day by sending flowers to loved ones (Rahmat Gul/AP)
Afghanistan Valentine's Day
However, traditionally many Afghans are unaware of the day (Rahmat Gul/AP)
Brides and grooms wait for rituals to begin during a community mass wedding ceremony in Kolkata, India (Bikas Das/AP)
Brides and grooms wait for rituals to begin during a community mass wedding ceremony in Kolkata, India (Bikas Das/AP)
Valentine's Day 2018
Back in the UK, Tattoo Fixers artist Alice Perrin joined forces with Domino's to design a range of tattoos for dough-mantics looking to declare their love to pizza this Valentine's Day (Matt Alexander/PA)
Same-sex marriage campaigners delivered Valentine's Day cards to Stormont as talks to restore powersharing rumble on (David Young/PA)
In Northern Ireland, same-sex marriage campaigners delivered Valentine's Day cards to Stormont as talks to restore powersharing rumble on (David Young/PA)
A man kneels in front of a girl on the Bridge of Love in Kiev, Ukraine (Efrem Lukatsky/AP)
A man kneels in front of a girl on the Bridge of Love in Kiev, Ukraine (Efrem Lukatsky/AP)
Pyeongchang Olympics Figure Skating Pairs
Olympic athletes also joined in, with US figure skater Chris Knierim giving partner Alexa Scimeca Knierim a Valentine's present as they got their scores in Gangneung, South Korea (Morry Gash/AP)
The Norwegian Men's Curling team sport Valentine's Day-themed trousers during the Men's Round Robin Session 2 match against Japan at the Gangneung Curling Centre during day five of the PyeongChang 2018 Winter Olympic Games in South Korea (David Davies/PA)
The Norwegian Men's Curling team sported Valentine's Day-themed trousers (David Davies/PA)
San Francisco Penguins Valentine
African penguins were also looking for love at the California Academy of Sciences after biologists provided them with red felt hearts (Marcio Jose Sanchez/AP)
Leaf cutting ants deliver red love hearts to their queen in their nest at Blair Drummond Safari Park (Andrew Milligan/PA)
And leaf-cutting ants delivered red love hearts to their queen in their nest at Blair Drummond Safari Park (Andrew Milligan/PA)