Buy your self a nice meal and then enjoy not having to spend time on a serious date, because it's a thursday night this year, and well I have a test in school the next day and I'm actually really glad I don't have a date. Be the happy one the next day who is actually awake.
For me, it's like any other day. Except there's discounts on chocolates the next day! Do whatever makes you feel comfortable though. =] Grab a good book, veg out in front of the TV, workout, treat yourself to something that you've been abstaining from, etc.