Washington Nationals rookie Bryce Harper's walk-up song: Justin Bieber's "Boyfriend"

http://youtu.be/iCSMzCazKe8

Washington Nationals outfielder Bryce Harper is known for drawing attention to himself, but he took it one step further on Tuesday night. The Nationals rookie slugger came to the plate with Justin Bieber's "Boyfriend" playing as his walk-up song.

The reason for Harper's music choice isn't known. The Washington Postsuggested Harper lost bet. But maybe the lyrics of "Boyfriend" speak to the rookie.

"If I was your boyfriend, never let you go

Keep you on my arm girl, you’d never be alone

I can be a gentleman, anything you want

If I was your boyfriend, I’d never let you go, I’d never let you go."

Could the slugger just want all the ladies to know he's a gentleman? Could there be a special someone out there he's speaking to?