Help With Song Name: Hip Hop

[BeardedPeaches]

Okay, this one has been haunting me for ages. I think I heard it on some ghetto pull up workout video I saw on Youtube, or maybe on a hip hop mash up video. Anyway, all I can remember is the chorus, which was kinda singing more than rapping (the way Eminem sings in the chorus for Not Afraid). It was a male guy singing, probably African American. It sounded sorta depressing/sad.

The lyrics I can remember go something like this: "You're always on my mind, you're always on my brain" POSSIBLY followed by "can't get you off my mind/brain". That last part is very iffy.

Any help on identifying the song would be appreciated.