Mossy Manse: Lexi assures Stefan that "this Elena girl" will come around eventually. She asks if they've had sex yet. Stefan smiles. "Nooooo." Lexi reminds him that vampire sex always works on the humans. And who am I to say, but there are times when super-human speed and inhuman force aren't exactly two tickets to paradise. I'm just sayin'... Stefan says he's setting aside all the vamp tricks like sex and compulsion. He wants Elena to come to him on her own terms. Confusing boredom for hunger, Lexi pops a straw into an I.V. bag of blood, like it was a juice bag. I'll never look at my kids drinking Capri Sun in the same way, again. I'd link to Capri Sun for you, but I want to see if those new Bing links do it. I always crack up when Bing links to the word vampire in one of these weecaps. Cash back on everything, Bing? Everything? Weecap. Right. Sorry. Lexi explains that she used to date a phlebotomist and he sets her up with bags of blood, but that doesn't stop Stefan from standing up and backing away. He says he's not judging her, which is debatable, although it's clear from his (general) ease in her company that he's terribly fond of her. The big point in of this scene is that he doesn't trust himself enough to try a little bagged blood. He's afraid it will lead him back to more deadly pursuits. Lexi tried the animal blood diet for three weeks once, but she couldn't hack it. She admires his resolve. So Lexi's like the kid that drank abusively in college, but wasn't actually addicted to hooch, grew up, and was able to dabble without problem, whereas Stefan lives as an addict-in-recovery.
Too bad there's no 12 Step plan for avoiding his brother, because just as Lexi asks what they're doing that night, Damon wanders in and informs them of Caroline's party at the Grill. Stefan has no interest in attending but Damon insists that it's just a party, not a birthday party for Stefan, and with the hunt on and all, it's important for the Brothers Salvatore to be seen out and about, interacting with the townsfolk. "We need to blend." Just because he's evil doesn't mean he's wrong. And with the same disclaimer as before, this is when I figured out when Damon would be killing off Lexi. Anyhow, he teases her about her cold, bagged blood, then makes himself scarce.