I know the feeling. Everyone has someone except me.
But at the end of the day, it is only one day.
As I was saying to someone I'm helping at the moment, at least it's not a year!
Not everyone does have someone, but they're not about to publicise it when they don't. Those lucky enough to have someone, are wrapped up in their bubble of happiness on days like these.
Remember to look at things objectively and know that it's not just you.