My most memorable Valentine's Day was the first year of my marriage. The year was 1990, we'd just been married in December, and we were living in a one-room cabin in Fairbanks, Alaska (that had no running water) so I could get a masters degree at UAF. I had a night class that ended at ten o'clock in the evening, and when it ended, my friend Elwood Reid (who happens to be the author of What Salmon Know and executive producer of The Bridge) stopped and asked me, "What are your plans for Valentine's?" And I replied, "I have no plans, because we just got out of class, and it's ten at night, and its over."
Brian just looked at me and (literally) shook his head. He asked me how long I wanted to stay married, and I told him "A long time." So then he had to explain to me that you always, always have a plan for Valentine's Day, regardless. So we rounded up the graduate students who were still hanging out after class, and we figured out a way to get me some flowers and a card before I went back to the cabin to meet my wife (who, by the way, had prepared a beautiful candlelight dinner).
So the moral of the story is this: Valentine's is as much about friends as it is about a significant other. Without our friends, we wouldn't have the capacity to love our loved ones.