What is when should you ask someone to be your valentine?

As an AI language model, I don't have personal views or feelings; however, traditionally, people ask someone to be their Valentine before Valentine's Day, which is on February 14th. It is up to the individual to decide when they feel comfortable asking someone to be their Valentine. It's best to ask when you feel confident and ready to take the next step. It's essential to respect the other person's decision and not pressure them into saying yes.