[ That intoxicating feeling -- is quickly turning into one of excruciating pain right now. Damon hisses when he feels her biting down hard on that open neck wound of his, but he doesn't push Elena away. Instead he tries to turn his head so that maybe they can get back to kissing and making out in this perfect little corner because this whole experience is dizzying alright. She's managed to take in a good amount of his blood and he's starting to feel a little lightheaded. Synthetic blood is definitely no match for the real thing and although he might have been able to withstand her feeding on him like this a whole lot more if they were back in Mystic Falls, Elena is simply gaining more and more strength right now while he is getting weaker by the second.
One more minute of this and he's sure his knees are going to buckle and his eyes are going to roll back in his head, but she deserves to have a good feed. IMO, this is absolutely harmless -- is what he's thinking. Plus, he likes it. He's enjoying the fact that she's feeding off of him. And he loves the fact that she's losing control and that she's embracing being a vampire. ]