There is a biological reason for St. Valentine’s Day.
The biological prerogative of most male animals including men is to spread their DNA to as many offspring as they can. But most female humans have a double prerogative of wanting to get the best male DNA for their offspring as they can, *and* to get the best provider male to help them raise their offspring. More advanced biology.
Ironically, the system works best in a system of monogamy, giving the best opportunities to the children. This is why socially enforced marriage has a biological purpose.
It gives men more assurance that his offspring will be his, and the woman protection that the man will help her raise their children. Thus it works better, gives better results, than just basic reproduction.
However, it thus makes sense for females to want reassurances from their mate that he is still loyal to her. This is why women are far more interested that important dates and events are remembered by her mate then men are. Her birthday, their wedding anniversary, their children’s birthdays, and St. Valentine’s Day are all opportunities for him to reassure her that he remains loyal to her and their children.
The hood you live is named what - again?