Go out with friends, or out to dinner with the one/s you love. Print some valentine days cards out if you don't have time to get to the store or if you forgot!
Enjoy your day! Celebrate all the love you have in your life, be it a husband, wife, boyfriend, girlfriend, friends, parents, or kids.
If all else fails and you get ditched, dumped, or simply don't have a valentine, go to the store and buy some candy, it's on sale by now.