Here's our guide to the best sites to the 24-hour lurve extravaganza, whether you want to blow out or blow chunks. Happy Valentine's Day .
Birds do it, bees do it, even elephants on heat do it .
Let's do it. Let's fall in love . It's the most romantic day of the year, a time for declarations of love , beautiful poetry , perhaps even a marriage proposal . Don't worry - the work's been done for you . Or you could send a classic Hollywood kiss to the object of your heart's desire.