But just because you don't have someone special to share it with, doesn't mean that the day itself can't be special. Dedicate this day to yourself, appreciate how far along you have come and pamper yourself. And if you have single friends, what better than that. Celebrate anti-valentine's day with them and just have a blast together! Or just let your pet be your Valentine.
Also, remember you are not alone in this and you can survive this. Check out some of Twitter reactions which will make you feel better: