Stefan and Damon in “Unfinished Business”

Stefan

You know, I was in a dark place, Damon.

Damon

And Katherine pulled you out of it. Irony abounds.

Stefan

You know, whatever is going on with you and Elena, you need to fix it. She's the best thing that ever happen to you.

Damon

You think I don't know that? I can't live without her... But when you think about it, I'm no better than Katherine. Elena will be happier without me. What, I'm being selfless? Don't give me that look.

Stefan

I'm not giving you a look.

Damon

Katherine fricking Pierce has a selfless moment, I'm not allowed to? Fine. Fine. When I get Elena back and the whole universe freaks out because the fated Doppelgängers are torn apart, just remember you-- you're the one that pep talked me out of doing the right thing for the universe and all mankind.

Stefan

I will keep that in mind.

Damon

You do that.