As long as I've known Elizabeth, she's been an extremely sexual creature, with one exception: she has never allowed anyone to go down on her. She calls it “her last virginity”, and clings to it like a thing of pride. So naturally, I had to taste her.
Jenny has been extremely supportive of having Elizabeth around as a playmate. Jenny enjoys hearing the details of my evenings with Liz, which I generally relay to her when I'm taking Jenny from behind, leaning forward to whisper details in her ear.