How To Ask Your Best Guy Friend To Be Your Boyfriend?

We have been in the same homeroom since kindergarten best friends since grade two and for 5 years now i can't stop thinking about him! My Friends Don't Know I Like Him And There Has Been Rumors Going Around That He Likes Me And One Of My Friends Sits Beside Him In French And Says Hes "Eyeing" Me! We Have Lockers Right Next To Each Other We Flirt All The Time! Should I Make The First Move? Or Should I Wait