There is a prophecy. The man who doesn't perish at the blade of Ra'a al Ghul will become Ra's al Ghul. Ra's al Ghul doesn't offer, he orders. Oliver! Don't delude yourself into thinking you have a choice.
Oliver: Are you alright? Diggle had mentioned that maybe you were feeling a little left out. Felicity: What? No. I just used to being your girl. I mean, not your girl, girl. Your girl. I know it sounds like the same word, but it means something different in my head. Oliver: Hey. You will always be my girl, Felicity.