Valentine's Day is the same date every year, so you've no reason to forget it!  Everyone loves to be remembered on Valentine's day, it tells them that you really love them and care about them.

Valentine's Day or St Valentine's Day is a tradition whereby you give your loved one a romantic gift to show them how much they mean to you.  St Valentine, the patron saint of the day, lived in 200AD and fell out of favour with the Roman Emperor, Claudius. The Emperor believed that his young soldiers should not marry, as they would not put their heart and souls into fighting the battles, if they were thinking about their wives and families.  St Valentine thought this was all wrong and tried to encourage the young couples to marry and secretly married them.

What an old romantic he was and he certainly had the right idea.  Claudius had him executed for his supposed misdeeds, and on his deathbed, he sent a note signed from St Valentine, which is were the tradition of sending a card sign anonymously comes from.