For any of you looking for useful advice about how to handle this evil accursed holiday without hitting any of the inevitable emotional landmines lying in wait for you on the 14th, read Some Thoughts on Valentine's Day at The Seven Sages Project (not to be confused with The Alan Parsons Project). You won't find any useful HOWTO in this article.
So why is Valentine's Day so evil? Simply this: On Valentine's Day, a person may be in one of two relationship-states. Either you're in a relationship, or you're not.
If you're not, you may talk about how lame and contrived Valentine's Day is, but the entire United States still conspires to make you feel like a total loser on February 14th, whether you believe any of it or not. Still, these people have it easy. The US does this to every Canadian citizen every single day of the year!
On the other hand, if you are in a relationship, there is absolutely no way you can possibly live up to the expectations engendered in your significant other by this sinister, Darwinian relationship-destroying thermonuclear weapon of holidays. No matter what you do, you will fall short of creating "the perfect day" for your sweetheart. This is guaranteed because "the perfect day" is fictional. It does not exist! It never will! We might as well make a holiday where everyone who is in a relationship is required to pull eighteen large fuscia baboons out of their ass to prove their love. That's just as plausible, after all.
I can only come to the conclusion that this inevitable failure is, in fact, the whole point of Valentine's Day. It's purpose, really, is to break up relationships where partners are incompatible. How many people do you know who've gotten dumped on, just before, or just after Valentine's Day? And why else would this day of "love" be in the middle of freakin February, which is the dankest and least romatic of all months in every place that Valentine's Day is "celebrated" (where "celebrated" is a euphemism for "mourned"). Why not the merry, merry month of May, when rebirth and fecundity are in the air?
I'll tell you why. Because Valentine's Day is specially designed to put the ultimate strain on your relationship. It's like getting your car inspected. It happens every year, and if you fail, you only have 30 days to try to fix the problem.
So my advice is, wear a black armband on Valentine's Day. If you're the sort of person that celebrates these things, do your best. If you're not, then try to ignore it. Pray that you pass the test. And then look forward to next year.