National Boyfriend Day is celebrated annually on October 3. It is a day to celebrate boyfriends and the important role they play in our lives. The holiday was created by internet users around 2014 as an annual holiday. It is unclear why the internet chose October as the month to celebrate boyfriends, but it has become increasingly popular ever since its beginning. If you want to celebrate National Boyfriend Day, you can do something nice for your boyfriend, let him know how important he is to you, take him on a scavenger hunt, surprise him with a romantic getaway, take him to a movie of his choosing, or pick a sporting event to his favorite team.