[last lines]
Elena Gilbert: You should have been the one that noticed.
Damon Salvatore: You don't think I know that?
Elena Gilbert: If only you'd seen through her, Damon.
[sighs]
Elena Gilbert: There would have been no vampire virus. Aaron would still be alive.
Damon Salvatore: Katherine didn't do this. I did. I thought you broke my heart, so I rip open Aaron's neck, that is how much control you have over me.
Elena Gilbert: And I'm still here! That's how much control you have over me!
Damon Salvatore: Listen to us. This is toxic. We are in a toxic relationship, Elena. I just killed your friend, and you find someone else to blame!
Elena Gilbert: You want me to blame you? Easy! Done. You screwed up, Damon. Again.
Damon Salvatore: Thank you!
Elena Gilbert: You put me in a position where I have to defend you... Again. Where I have to bend my morals. Again. Where I have to go against every single thing that I believe in... Again! Because I love you!
Damon Salvatore: Then stop loving me!
Elena Gilbert: I can't!
Damon Salvatore: Well, that's the problem. We don't work!
Elena Gilbert: I know...!
Damon Salvatore: Then we agree? This has to end.
Elena Gilbert: It just did. It's over. We're over.
[and then they look deep into each other's eyes...]