Every year for 3 days, this national event happens, all that happens is men/boys need to spend time with there girlfriend. You may spend time with your girl, but these 3 days are just for your girl, not for anyone else, just your loved one!
Boy: Hey, Let’s hangout today, I want to spend every second of the day with you, Come sleep at mine for 3 days!
Girl: Why three days?
Boy: Because it’s National Spend Time With Your Girl Day! And, I love you