aargh. I do take your point about the series' resonance with Today's Yoof (which I mistyped as Toady's Yoof, hee); unfortunately, I've never managed to persuade myself to sit through more than about fifteen minutes of the first movie, so would be unqualified to suggest which scenes are appropriate. I'd also hesitate to use Twilight as any sort of exemplar about sexuality and tenderness because its gender and power issues are so totally screwed up (although I suppose that's a teaching opportunity in itself). There are various stills from the latest film doing the rounds, though, which have a Bella-and-Edward-cuddling-in-bed vibe, so if Mrs X has the gumption to sit through it, some of the bits around the wedding and honeymoon may work?