Facebook, Twitter and Snapchat are becoming crucial tools for sending Valentine's wishes, especially for those without a partner.

According to a SOASTA survey conducted by Harris Poll, 79% of under 18s and 71% of adults in the US will be wishing someone a happy Valentine's Day this year.

And while married couples are most likely to opt for traditional methods such as buying and sending cards to each other, 40% of single adults will be turning to social media to express their love. That's more than under 18s (37%) and those with a husband or wife (28%).

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SOASTA's study was conducted online and polled 2046 adults aged 18 or over and 1,158 youths aged from 8-18.