Ausiello spoils us with some more info on more possible interaction between Damon and Elena.

Question: Any Vampire Diaries scoop? I really loved the Damon and Elena interaction we got. Will we get more? —Jezz
Ausiello: Indeed you will. “Damon is obsessed with Elena’s doppelganger, and if one day Elena’s doppelganger is not in the picture, it’s an immediate transference,” explains exec producer Julie Plec. “We’ll see him have an evolution of feelings for her. And, over time, we’ll see her wonder if there’s something redeemable about this guy.”