What is a valentine? Valentine's Day is a day that people exchange cards or messages, to one another. Some people see it as a day to show your love for one another, but other people, mainly the single people, see it as a day the reminds lonely people that they are alone. Personaly I don't mind it. It's not my favorite holiday and I don't really see a need for it, but I don't mope around every February 14 just because I don't have a boyfriend. I have my friends and for now that is all I need.