What is what does it mean to be someone's valentine?

Being someone's Valentine generally means you are the person they choose to express romantic affection towards on Valentine's Day. This often involves giving gifts like flowers, chocolates, or cards expressing love or admiration. It can also mean spending quality time together, going on a date, or simply showing appreciation for the other person. The meaning is largely dependent on the relationship between the two people and the level of commitment they share. Being someone's Valentine implies a special connection and often a desire to celebrate love and romance.