"I dunno what to do"

I have absolutely no idea either.
Should I email him and tell him I'm sorry?
Of course, you don't know who I'm talking about. Sheesh. Should I wait until the school year begins? Gawd, that song.
Now I have to choose,
I dunno what to do
He loves me
He loves
He loves me not
Jeeeez.
I'm talking about my ex-maybe-friend David. I was going to apologize during the summer, but it's already august and...I don't know how to. See, me and my other friend Vicky were always making fun of him and one day during exam week we were doing the whole "battle of insults" thing and he whacked me on the head several times with his pencil case, after which I slapped him- hard.
My vison kind of spun for a few seconds after he whacked me with his pencil case that time.
I know now that that's when I should have apologized- but it's too late.
Just like how I know I should have cut off Melodia 7 months ago.
It's stupid how we only figure out stuff like this after it's happened.
Should I email him? Now?
I'm scared.
But I will. Seeya.